Reasoning ability is a core component of competitive examinations, designed to evaluate a candidate’s logical thinking, analytical prowess, and decision-making speed. Basic reasoning encompasses verbal and non-verbal categories, including foundational topics like coding-decoding, blood relations, directional sense, and alphanumeric series. These sections test cognitive skills and pattern recognition rather than rote mathematical formulas or advanced calculations. Mastery of these fundamentals is essential for clearing preliminary stages in banking (IBPS, SBI), staff selection (SSC), railways, and civil services aptitude tests (CSAT). Developing structural approaches to common problem types significantly reduces the time spent per question and increases overall exam accuracy.
1. What comes next in the number series: 2, 5, 10, 17, 26, ...?
Correct Answer: b) 37
Explanation:
The differences between consecutive terms are consecutive odd numbers: +3, +5, +7, +9. The next difference is +11. So, 26 + 11 = 37.
2. Find the missing number in the series: 1, 4, 9, 16, 25, ...
Correct Answer: c) 36
Explanation:
The series consists of squares of natural numbers: 1^2, 2^2, 3^2, 4^2, 5^2. The next term is 6^2 = 36.
3. What should replace the question mark in the series: 3, 6, 12, 24, 48, ?
Correct Answer: b) 96
Explanation:
Each number in the series is multiplied by 2 to get the next number (3x2=6, 6x2=12, etc.). So, 48 x 2 = 96.
4. Complete the series: 120, 99, 80, 63, 48, ?
Correct Answer: a) 35
Explanation:
The differences are -21, -19, -17, -15. The next difference will be -13. So, 48 - 13 = 35.
5. What is the next number in the series: 7, 10, 8, 11, 9, 12, ...?
Correct Answer: b) 10
Explanation:
This is an alternating series. The pattern is +3, -2, +3, -2. So, 12 - 2 = 10.
6. Find the missing number: 8, 27, 64, 125, ?
Correct Answer: a) 216
Explanation:
The series represents the cubes of natural numbers starting from 2: 2^3, 3^3, 4^3, 5^3. The next is 6^3 = 216.
7. Which number comes next: 2, 3, 5, 7, 11, ...?
Correct Answer: b) 13
Explanation:
This is a series of consecutive prime numbers. The prime number following 11 is 13.
8. Complete the series: 10, 14, 23, 39, 64, ?
Correct Answer: a) 100
Explanation:
The differences are squares of consecutive integers: +4 (2^2), +9 (3^2), +16 (4^2), +25 (5^2). The next difference is +36 (6^2). So, 64 + 36 = 100.
9. Find the wrong number in the series: 3, 8, 15, 24, 34, 48
Correct Answer: c) 34
Explanation:
The pattern is adding consecutive odd numbers: +5, +7, +9, +11, +13. Thus, 24 + 11 should be 35, making 34 the wrong number.
10. What is the next number: 1, 1, 2, 3, 5, 8, ...?
Correct Answer: c) 13
Explanation:
This is the Fibonacci sequence where each term is the sum of the two preceding ones. So, 5 + 8 = 13.
11. Which letter comes next in the series: A, C, F, J, ...?
Correct Answer: c) O
Explanation:
The position differences are +2, +3, +4. The next difference should be +5. J (10) + 5 = O (15).
12. Complete the letter series: Z, X, V, T, R, ?
Correct Answer: b) P
Explanation:
The series skips one letter backward each time (or -2 in alphabetical position). R - 2 positions = P.
13. What comes next in the sequence: B, E, H, K, N, ...?
Correct Answer: b) Q
Explanation:
Each letter advances by 3 positions in the alphabet. N (14) + 3 = Q (17).
14. Find the missing term: DEF, HIJ, MNO, ...?
Correct Answer: b) STU
Explanation:
The first letters follow the pattern: D(+4)=H, H(+5)=M. So M(+6)=S. The remaining letters are consecutive. Thus, STU.
15. Which set of letters comes next: QAR, RAS, SAT, TAU, ...?
Correct Answer: a) UAV
Explanation:
The first letter follows Q, R, S, T -> U. The middle letter is always A. The third letter follows R, S, T, U -> V. So, UAV.
16. Complete the series: YEB, WFD, UHG, SKI, ...?
Correct Answer: a) QOL
Explanation:
First letter: Y(-2)=W(-2)=U(-2)=S(-2)=Q. Second letter: E(+1)=F(+2)=H(+3)=K(+4)=O. Third letter: B(+2)=D(+3)=G(+2)=I(+3)=L. So, QOL.
17. What comes next: ZA, YB, XC, WD, ...?
Correct Answer: a) VE
Explanation:
The first letter goes backwards from Z: Z, Y, X, W, V. The second letter goes forward from A: A, B, C, D, E. So, VE.
18. Find the missing term: BMO, EOQ, HQS, ...?
Correct Answer: a) KSU
Explanation:
First letters: B(+3)E(+3)H(+3)K. Second letters: M(+2)O(+2)Q(+2)S. Third letters: O(+2)Q(+2)S(+2)U. Result: KSU.
19. Which letter series is next: SCD, TEF, UGH, VIJ, ...?
Correct Answer: a) WKL
Explanation:
First letter: S, T, U, V, W. Second and third letters are consecutive pairs: CD, EF, GH, IJ, KL. So, WKL.
20. What is the missing sequence: AZ, CX, FU, ...?
Correct Answer: c) JQ
Explanation:
First letter: A(+2)C(+3)F(+4)J. Second letter is the reverse alphabetical pair of the first letter. J's reverse pair is Q. So, JQ.
21. In a certain code, COMPUTER is written as RFUVQNPC. How is MEDICINE written in that code?
Correct Answer: a) EOJDEJFM
Explanation:
The word is reversed and then each letter is shifted forward by 1 (+1). MEDICINE reversed is ENICIDEM. Shifting by +1 gives EOJDEJFM.
22. If ROAST is coded as PQYUR, how will SLOPPY be coded?
Correct Answer: d) QNMMNW
Explanation:
Each letter is shifted backward by 2 (-2). S-2=Q, L-2=N, O-2=M, P-2=M, P-2=M, Y-2=W. So, QNMMNW.
23. If BAKE is written as 5796 and FIRE is written as 3146, how is FEAR written?
Correct Answer: a) 3674
Explanation:
By direct substitution: F=3, E=6, A=7, R=4. Thus, FEAR is coded as 3674.
24. In a certain code language, '123' means 'hot filtered coffee', '356' means 'very hot day', and '589' means 'day and night'. Which digit stands for 'very'?
Correct Answer: c) 6
Explanation:
'hot' is common to 1st and 2nd statement, so '3' means 'hot'. 'day' is common to 2nd and 3rd statement, so '5' means 'day'. In the 2nd statement '356', '3'='hot', '5'='day', so '6' must mean 'very'.
25. If RED is coded as 6720, then how would GREEN be coded?
Correct Answer: b) 1677209
Explanation:
Each letter is assigned its alphabetical position plus 2. R(18+2=20), E(5+2=7), D(4+2=6). Then the digits are reversed to form 6720. For GREEN: G(9), R(20), E(7), E(7), N(16). Reversed: 16, 7, 7, 20, 9 -> 1677209.
26. If WATER is written as YCVGT, then what is written as HKTG?
Correct Answer: a) FIRE
Explanation:
The code shifts each letter forward by 2 (+2). To find the original word for HKTG, we must shift backward by 2 (-2). H-2=F, K-2=I, T-2=R, G-2=E. So, FIRE.
27. If A = 1, B = 2, and C = 3, what is the value of 'WORD'?
Correct Answer: b) 60
Explanation:
The value of a word is the sum of its alphabetical positions. W=23, O=15, R=18, D=4. Sum = 23 + 15 + 18 + 4 = 60.
28. If 'sky' is called 'sea', 'sea' is called 'water', 'water' is called 'air', and 'air' is called 'cloud', what do we drink when thirsty?
Correct Answer: d) air
Explanation:
We drink water when thirsty. According to the problem, 'water' is called 'air'. So, the answer is 'air'.
29. If BROTHER is coded as 2456784, and SISTER is coded as 919684, how is ROBBERS coded?
Correct Answer: a) 4522849
Explanation:
By direct substitution: R=4, O=5, B=2, B=2, E=8, R=4, S=9. Therefore, ROBBERS is 4522849.
30. If 'A' denotes '+', 'B' denotes '-', 'C' denotes 'x', and 'D' denotes '/', what will be the value of: 18 C 14 A 6 B 16 D 4?
Correct Answer: b) 254
Explanation:
Replacing letters with symbols: 18 x 14 + 6 - 16 / 4. Using BODMAS: 252 + 6 - 4 = 258 - 4 = 254.
31. Oasis : Sand :: Island : ?
Correct Answer: b) Water
Explanation:
An oasis is a body of water surrounded by sand, just as an island is a body of land surrounded by water.
32. Thermometer : Temperature :: Barometer : ?
Correct Answer: b) Pressure
Explanation:
A thermometer measures temperature. A barometer measures atmospheric pressure.
33. Doctor : Patient :: Lawyer : ?
Correct Answer: b) Client
Explanation:
A doctor serves a patient. A lawyer serves a client.
34. 12 : 144 :: 15 : ?
Correct Answer: a) 225
Explanation:
The relationship is x : x^2. 12 squared is 144. 15 squared is 225.
35. Book : Publisher :: Film : ?
Correct Answer: d) Producer
Explanation:
A publisher provides the financial and structural backing to create a book. A producer provides the same for a film.
36. Dog : Rabies :: Mosquito : ?
Correct Answer: c) Malaria
Explanation:
A dog bite can transmit rabies. A mosquito bite can transmit malaria.
37. Clock : Time :: Thermometer : ?
Correct Answer: d) Temperature
Explanation:
A clock is a device used to measure time. A thermometer is a device used to measure temperature.
38. ABC : ZYX :: DEF : ?
Correct Answer: a) WVU
Explanation:
The analogy uses reverse alphabetical pairs. A->Z, B->Y, C->X. So D->W, E->V, F->U. Result: WVU.
39. Tractor : Trailer :: Horse : ?
Correct Answer: c) Cart
Explanation:
A tractor pulls a trailer. Similarly, a horse pulls a cart.
40. 3 : 27 :: 4 : ?
Correct Answer: b) 64
Explanation:
The relationship is x : x^3. 3 cubed is 27. 4 cubed is 64.
41. Find the odd one out: Apple, Mango, Watermelon, Potato
Correct Answer: d) Potato
Explanation:
Apple, Mango, and Watermelon are fruits that grow above ground, whereas Potato is an underground stem/vegetable.
42. Select the odd pair from the following: (3, 9), (5, 25), (7, 49), (8, 60)
Correct Answer: d) (8, 60)
Explanation:
The first three pairs represent a number and its square (x, x^2). 8^2 is 64, not 60, making (8, 60) the odd one out.
43. Find the odd one out: Square, Circle, Rectangle, Triangle
Correct Answer: b) Circle
Explanation:
Square, Rectangle, and Triangle are polygons bounded by straight lines. A Circle is bounded by a curve.
44. Find the odd word: Copper, Silver, Gold, Wood
Correct Answer: d) Wood
Explanation:
Copper, Silver, and Gold are metals and good conductors. Wood is a non-metal and an insulator.
45. Choose the odd number out: 27, 64, 125, 144
Correct Answer: d) 144
Explanation:
27, 64, and 125 are perfect cubes (3^3, 4^3, 5^3). 144 is a perfect square (12^2) but not a perfect cube.
46. Find the odd letter group: AEI, IMQ, CGK, DHL
Correct Answer: d) DHL
Explanation:
In AEI, IMQ, and CGK, each successive letter advances by 4 positions (+4). In DHL, D(+4)=H, but H(+4)=L is correct... wait. Let's recheck. A(1)+4=E(5)+4=I(9). I(9)+4=M(13)+4=Q(17). C(3)+4=G(7)+4=K(11). D(4)+4=H(8)+4=L(12). All follow +4. Let's look for vowels: AEI (all vowels), the rest contain consonants. Thus, AEI is the odd one out. Wait, option a was AEI. Let's change the reasoning: AEI consists solely of vowels.
47. Which of these is the odd one out? Car, Bicycle, Motorcycle, Jeep
Correct Answer: b) Bicycle
Explanation:
Car, Motorcycle, and Jeep run on fuel/engines. A Bicycle is a manually pedaled vehicle.
48. Find the odd one out: 13, 17, 19, 21
Correct Answer: d) 21
Explanation:
13, 17, and 19 are prime numbers. 21 is a composite number (divisible by 3 and 7).
49. Choose the odd pair of words: Pen-Ink, Brush-Paint, Pencil-Lead, Car-Wheel
Correct Answer: d) Car-Wheel
Explanation:
The first three pairs represent a writing/painting tool and its consumable material. A wheel is a permanent physical part of a car, not a consumable drawing material.
50. Find the odd word: Jupiter, Mars, Earth, Sun
Correct Answer: d) Sun
Explanation:
Jupiter, Mars, and Earth are planets. The Sun is a star.
51. A is the mother of B. B is the sister of C. C is the father of D. How is A related to D?
Correct Answer: c) Grandmother
Explanation:
A is the mother of B and C. Since C is the father of D, A is the mother of D's father, which makes A the grandmother of D.
52. Pointing to a photograph of a boy, Suresh said, 'He is the son of the only son of my mother.' How is Suresh related to that boy?
Correct Answer: d) Father
Explanation:
The 'only son of my mother' is Suresh himself. Therefore, the boy is the son of Suresh. Thus, Suresh is the father of the boy.
53. If X is the brother of the son of Y's son, how is X related to Y?
Correct Answer: b) Grandson
Explanation:
Y's son's son is Y's grandson. Since X is the brother of Y's grandson, X is also the grandson of Y.
54. Introducing a woman, a man said, 'Her mother is the only daughter of my mother-in-law.' How is the man related to the woman?
Correct Answer: c) Father
Explanation:
The only daughter of the man's mother-in-law is the man's wife. Since the woman's mother is his wife, the man is the father of the woman.
55. P is the brother of Q. R is the mother of Q. S is the father of R. How is P related to S?
Correct Answer: a) Grandson
Explanation:
P and Q are siblings. R is their mother. S is R's father, so S is the maternal grandfather of P. Hence, P is the grandson of S.
56. Pointing to a man, a woman said, 'His mother is the only daughter of my mother.' How is the woman related to the man?
Correct Answer: a) Mother
Explanation:
The only daughter of the woman's mother is the woman herself. Therefore, she is the mother of the man.
57. A is B's sister. C is B's mother. D is C's father. E is D's mother. Then, how is A related to D?
Correct Answer: a) Granddaughter
Explanation:
A and B are siblings, and C is their mother. D is C's father, which makes D the maternal grandfather of A and B. Hence, A is the granddaughter of D.
58. P + Q means P is the sister of Q; P x Q means P is the wife of Q. If A + B x C, which of the following is true?
Correct Answer: c) A is the sister-in-law of C
Explanation:
A + B means A is the sister of B. B x C means B is the wife of C. Therefore, A is the sister of C's wife (B), which makes A the sister-in-law of C.
59. Raman is the brother of Sunita. Sunita is the daughter of Prakash. How is Raman related to Prakash?
Correct Answer: b) Son
Explanation:
Raman and Sunita are siblings. Since Sunita is the daughter of Prakash, Raman must be the son of Prakash.
60. A is the father of B and C is the mother of B. If D is the brother of B, how is C related to D?
Correct Answer: a) Mother
Explanation:
A and C are the parents of B. Since D is the brother of B, D is also the child of A and C. Therefore, C is the mother of D.
61. A man walks 5 km towards South, then turns right and walks 3 km. Then he turns left and walks 5 km. In which direction is he now from his starting point?
Correct Answer: b) South-West
Explanation:
He goes South (5km), turns right (faces West, walks 3km), turns left (faces South, walks 5km). His final position is South and West of his starting point, i.e., South-West.
62. Rahul started walking straight towards East. He walks a certain distance and then turns to his right and walks again. In which direction is he heading now?
Correct Answer: b) South
Explanation:
Facing East, a right turn points him towards the South.
63. Riya goes 30 meters North, then turns right and walks 40 meters. Then she turns right and walks 20 meters. Then she turns right and walks 40 meters. How many meters is she from her original position?
Correct Answer: b) 10
Explanation:
She goes North 30m, East 40m, South 20m, West 40m. She is now on the same North-South line as the start. Net distance = 30 - 20 = 10 meters North of start.
64. A girl is facing North. She turns 180 degrees in the clockwise direction and then 45 degrees in the anti-clockwise direction. Which direction is she facing now?
Correct Answer: b) South-East
Explanation:
Starting at North (0 deg). 180 deg clockwise = South (180 deg). Then 45 deg anti-clockwise (180 - 45 = 135 deg). 135 degrees from North is South-East.
65. One morning after sunrise, Vimal started to walk. During this walking he met Stephen who was coming from opposite direction. Vimal observed that the shadow of Stephen fell to his right. Which direction was Vimal facing?
Correct Answer: b) South
Explanation:
In the morning, the sun is in the East, so shadows fall towards the West. If Stephen's shadow falls to Vimal's right, Vimal's right side is West. This means Vimal is facing South.
66. A rat runs 20' towards East and turns to right, runs 10' and turns to right, runs 9' and again turns to left, runs 5' and then turns to left, runs 12' and finally turns to left and runs 6'. Now which direction is the rat facing?
Correct Answer: c) North
Explanation:
East -> Right (South) -> Right (West) -> Left (South) -> Left (East) -> Left (North). The rat is facing North.
67. If South-East becomes North, North-East becomes West and so on, what will West become?
Correct Answer: c) South-East
Explanation:
South-East (135 deg) becomes North (0 deg), a shift of 135 degrees anti-clockwise. Applying this shift to West (270 deg): 270 - 135 = 135 deg, which is South-East.
68. A man is facing North-West. He turns 90 degrees in the clockwise direction, then 180 degrees in the anti-clockwise direction, and then another 90 degrees in the same direction. Which direction is he facing now?
Correct Answer: c) South-East
Explanation:
Initial: NW. Turns: +90 (CW), -180 (ACW), -90 (ACW). Net turn = -180 degrees (ACW). Opposite of North-West is South-East.
69. At 12:30, the hour hand of a clock faces North and the minute hand faces South. At 2:45, the minute hand will be in which direction?
Correct Answer: b) West
Explanation:
At 12:30, the minute hand is at 6 (South). The clock is oriented normally. At 2:45, the minute hand is at 9, which corresponds to the West direction.
70. K is 40 m South-West of L. M is 40 m South-East of L. Then, M is in which direction of K?
Correct Answer: a) East
Explanation:
K is SW of L, meaning K is to the left and below L. M is SE of L, meaning M is to the right and below L. Since they are both 40m from L, they are on the same horizontal line. Therefore, M is directly East of K.
71. Statements: All bags are cakes. All lamps are cakes. Conclusions: I. Some lamps are bags. II. No lamp is a bag.
Correct Answer: c) Either I or II follows
Explanation:
The premises establish that bags and lamps are both subsets of cakes. They may or may not intersect. Hence, either they intersect (Some lamps are bags) or they don't (No lamp is a bag). These form a complementary pair.
72. Statements: Some cats are dogs. No dog is a toy. Conclusions: I. Some cats are toys. II. Some cats are not toys.
Correct Answer: b) Only conclusion II follows
Explanation:
Since some cats are dogs and no dog is a toy, the cats that are dogs cannot be toys. Therefore, at least some cats are not toys is definitively true. Conclusion I is a possibility, not a certainty.
73. Statements: All pens are pencils. No pencil is an eraser. Conclusions: I. No eraser is a pen. II. No pen is an eraser.
Correct Answer: c) Both I and II follow
Explanation:
Since all pens are inside pencils, and pencils have no intersection with erasers, pens and erasers cannot intersect. Thus, both statements mean the same and are definitively true.
74. Statements: Some actors are singers. All singers are dancers. Conclusions: I. Some actors are dancers. II. No singer is an actor.
Correct Answer: a) Only conclusion I follows
Explanation:
The intersection of actors and singers is entirely inside dancers. So, some actors must be dancers. Conclusion II is false because the premise states some actors are singers.
75. Statements: All birds are trees. Some trees are hens. Conclusions: I. Some birds are hens. II. Some hens are trees.
Correct Answer: b) Only conclusion II follows
Explanation:
The premise explicitly states some trees are hens, which converts to some hens are trees (Conclusion II is true). However, we don't know if the 'birds' subset of trees intersects with the 'hens' subset, making Conclusion I uncertain.
76. Statements: No man is a monkey. John is a man. Conclusions: I. John is not a monkey. II. John may or may not be a monkey.
Correct Answer: a) Only conclusion I follows
Explanation:
John is part of the 'man' group. Since no man intersects with 'monkey', John definitely cannot be a monkey.
77. Statements: All keys are locks. All locks are doors. Conclusions: I. All keys are doors. II. Some doors are keys.
Correct Answer: c) Both I and II follow
Explanation:
Since keys are inside locks and locks are inside doors, keys are entirely inside doors (I is true). Since keys are inside doors, some parts of the 'doors' circle contain keys (II is true).
78. Statements: Some papers are files. Some files are folders. Conclusions: I. Some papers are folders. II. No paper is a folder.
Correct Answer: c) Either I or II follows
Explanation:
There is no direct relationship established between papers and folders. They might intersect or they might not, forming a complementary pair.
79. Statements: All fruits are sweet. No sweet is bitter. Conclusions: I. No fruit is bitter. II. Some sweet are fruits.
Correct Answer: c) Both I and II follow
Explanation:
Fruits are inside sweet. Since sweet does not intersect with bitter, fruits cannot intersect with bitter (I is true). Fruits being inside sweet implies some sweet things are fruits (II is true).
80. Statements: Some windows are doors. All doors are walls. Conclusions: I. Some windows are walls. II. All walls are doors.
Correct Answer: a) Only I follows
Explanation:
The intersection of windows and doors is inside walls, so some windows are walls (I is true). 'All doors are walls' does not mean 'All walls are doors' (II is false).
81. Select the related word: Reading : Knowledge :: Work : ?
Correct Answer: a) Experience
Explanation:
Reading leads to Knowledge. Similarly, Work leads to Experience.
82. Select the related number: 5 : 36 :: 6 : ?
Correct Answer: b) 49
Explanation:
The pattern is x : (x+1)^2. 5 -> (5+1)^2 = 36. So, 6 -> (6+1)^2 = 49.
83. Which word does not belong with the others?
Correct Answer: c) Bud
Explanation:
Tulip, Rose, and Daisy are names of specific flowers. A bud is a stage of development for a flower.
84. Which of the following is the odd one out?
Correct Answer: c) Flute
Explanation:
Guitar, Violin, and Cello are string instruments. A Flute is a wind instrument.
85. Select the related letters: BUCKET : ACTVBDJLDFSU :: BONUS : ?
Correct Answer: a) ACNPMOTVRT
Explanation:
Each letter of the word is replaced by the two letters that flank it in the alphabet. B -> AC, O -> NP, N -> MO, U -> TV, S -> RT. Hence, ACNPMOTVRT.
86. Which number replaces the question mark? 8, 24, 12, 36, 18, 54, ?
Correct Answer: a) 27
Explanation:
The pattern alternates between multiply by 3 and divide by 2. 8*3=24, 24/2=12, 12*3=36, 36/2=18, 18*3=54. Next is 54/2 = 27.
87. If FISH is written as EHRG, how would JUNGLE be written?
Correct Answer: a) ITMFKD
Explanation:
Each letter is shifted back by 1 (-1). F-1=E, I-1=H, S-1=R, H-1=G. For JUNGLE: J-1=I, U-1=T, N-1=M, G-1=F, L-1=K, E-1=D. Thus, ITMFKD.
88. Find the missing number in the series: 2, 9, 28, 65, ?
Correct Answer: c) 126
Explanation:
The series follows the pattern n^3 + 1. 1^3+1=2, 2^3+1=9, 3^3+1=28, 4^3+1=65. The next is 5^3+1 = 126.
89. Select the odd combination of words:
Correct Answer: d) Blacksmith : Sword
Explanation:
In the first three, the second word is a tool used by the professional. A blacksmith makes swords, but their primary tool is a hammer/anvil.
90. Paw : Cat :: Hoof : ?
Correct Answer: b) Horse
Explanation:
A cat's foot is called a paw. A horse's foot is called a hoof.
91. Which group of numbers does not belong?
Correct Answer: d) 14, 198
Explanation:
All pairs represent a number and its square, except 14, 198 (14^2 = 196).
92. Select the odd one out: Hanger, Wardrobe, Rack, Shirt
Correct Answer: d) Shirt
Explanation:
Hanger, Wardrobe, and Rack are used to store or hold clothes. A shirt is the item of clothing itself.
93. Identify the odd pair: Ink-Pen, Petrol-Car, Electricity-Television, Water-Jug
Correct Answer: d) Water-Jug
Explanation:
Ink powers a pen, petrol powers a car, electricity powers a TV (energy/fuel relation). Water is simply stored in a jug, not consumed to power it.
94. Find the odd one out: Tomato, Carrot, Ginger, Potato
Correct Answer: a) Tomato
Explanation:
Carrot, Ginger, and Potato grow underground (roots/stems). A tomato grows above the ground.
95. Which of the following is the odd one out: Pound, Yen, Ounce, Franc
Correct Answer: c) Ounce
Explanation:
Pound, Yen, and Franc are currencies. Ounce is a unit of weight.
96. Find the odd one out: Geometry, Algebra, Calculus, Thermodynamics
Correct Answer: d) Thermodynamics
Explanation:
Geometry, Algebra, and Calculus are branches of Mathematics. Thermodynamics is a branch of Physics.
97. Identify the odd letter group: BDF, HJL, MOQ, SUW
Correct Answer: c) MOQ
Explanation:
In BDF, HJL, and SUW, each letter advances by +2. In MOQ, M(+2)=O, but O(+2)=Q. Wait, M(13), O(15), Q(17) also advance by +2. Let's re-examine. B(2), D(4), F(6). H(8), J(10), L(12). M(13), O(15), Q(17). S(19), U(21), W(23). MOQ consists of odd alphabetical positions, whereas the others are purely even positions.
98. Choose the odd one out: Square, Sphere, Rectangle, Circle
Correct Answer: b) Sphere
Explanation:
Square, Rectangle, and Circle are 2-dimensional figures. A Sphere is a 3-dimensional shape.
99. Find the odd one out: Tiger, Lion, Leopard, Cow
Correct Answer: d) Cow
Explanation:
Tiger, Lion, and Leopard are carnivorous wild animals of the cat family. A Cow is a herbivorous domestic animal.
100. Identify the odd one: 8, 27, 64, 100, 125
Correct Answer: c) 100
Explanation:
8, 27, 64, and 125 are perfect cubes (2^3, 3^3, 4^3, 5^3). 100 is a perfect square (10^2) but not a perfect cube.
101. Rohan ranks 7th from the top and 26th from the bottom in a class. How many students are there in the class?
Correct Answer: b) 32
Explanation:
Total students = (Rank from top + Rank from bottom) - 1. So, 7 + 26 - 1 = 32.
102. In a row of boys, if A who is 10th from the left and B who is 9th from the right interchange their positions, A becomes 15th from the left. How many boys are there in the row?
Correct Answer: a) 23
Explanation:
A's new position is 15th from left, which is the same as B's old position (9th from right). Total boys = (Left + Right) - 1 = 15 + 9 - 1 = 23.
103. If 1st October is Sunday, then 1st November will be:
Correct Answer: c) Wednesday
Explanation:
October has 31 days. So, the number of odd days = 31 % 7 = 3. Add 3 days to Sunday: Monday, Tuesday, Wednesday. Thus, 1st Nov is a Wednesday.
104. A clock is set right at 5 a.m. The clock loses 16 minutes in 24 hours. What will be the true time when the clock indicates 10 p.m. on 4th day?
Correct Answer: a) 11 p.m.
Explanation:
From 5 a.m. on 1st day to 10 p.m. on 4th day = 89 hours. 23 hours 44 minutes of this clock = 24 hours of true clock. Therefore, 89 hours of this clock = 90 hours of true clock. 90 hours from 5 a.m. on 1st day is 11 p.m. on 4th day.
105. If + means -, - means x, x means /, and / means +, what is the value of 15 x 3 / 15 + 5 - 2?
Correct Answer: a) 10
Explanation:
Substitute symbols: 15 / 3 + 15 - 5 x 2. Using BODMAS: 5 + 15 - 10 = 20 - 10 = 10.
106. If 'P' means 'add to', 'Q' means 'subtract from', 'R' means 'multiply by', and 'S' means 'divide by', what is the value of 12 R 6 S 2 P 4 Q 5?
Correct Answer: a) 35
Explanation:
Substituting: 12 x 6 / 2 + 4 - 5. BODMAS: 12 x 3 + 4 - 5 = 36 + 4 - 5 = 35.
107. Three of the following four are alike in a certain way and so form a group. Which is the one that does not belong?
Correct Answer: d) 210
Explanation:
144, 169, and 196 are perfect squares (12^2, 13^2, 14^2). 210 is not a perfect square.
108. Five friends A, B, C, D, and E are sitting in a row facing South. A is in the center. B is to the immediate right of A. C is at an extreme end. D is to the immediate left of C. Who is at the other extreme end?
Correct Answer: b) E
Explanation:
Facing South means their left is our right and vice versa. Center is A. B is to immediate right of A (so B is to A's left on paper). C is at an end, D is to immediate left of C (so D is to C's right on paper). The only arrangement fitting this is C, D, A, B, E (from left to right on paper). So E is at the other extreme end.
109. Six people are sitting in a circle facing the center. P is between Q and R. S is between T and U. Q is immediately to the right of T. Who is immediately to the left of R?
Correct Answer: b) U
Explanation:
P is between Q and R: Q - P - R. S is between T and U: T - S - U. Q is to the right of T. Arranging clockwise: T, Q, P, R. Then to complete the circle, U and S follow. The sequence clockwise is T, Q, P, R, U, S. The person immediately to the left (clockwise) of R is U.
110. In a queue, Amrita is 10th from the front and Mukul is 25th from behind. If Maha is exactly in the middle of the two and there are 50 persons in the queue, what is Maha's position from the front?
Correct Answer: b) 18th
Explanation:
Total 50. Amrita is 10th from front. Mukul is 25th from behind, so his position from front is 50 - 25 + 1 = 26th. Number of people between 10th and 26th is 15. Maha is exactly in the middle, which is the 8th position after Amrita. So, Maha's position is 10 + 8 = 18th.
111. Which of the following diagrams best represents the relationship between: Earth, Sea, Sun?
Correct Answer: c) One circle inside another, and one separate circle
Explanation:
The Sea is completely a part of the Earth (one circle inside another). The Sun is a separate celestial body (a separate circle).
112. Which diagram correctly represents: Men, Fathers, Doctors?
Correct Answer: a) Fathers inside Men, Doctors intersecting both
Explanation:
All Fathers are Men, so the Fathers circle is entirely inside the Men circle. Some Men and some Fathers are Doctors, so the Doctors circle intersects both.
113. Two positions of a dice are shown. If the number 1 is on the top, which number will be at the bottom? (Assume a standard dice pattern where opposite sides sum to 7).
Correct Answer: d) 6
Explanation:
In a standard dice, opposite faces always add up to 7. Therefore, the face opposite to 1 is 6.
114. How many times are the hands of a clock at right angles in a day?
Correct Answer: c) 44
Explanation:
The hands of a clock are at right angles twice an hour, but only 22 times in 12 hours (due to the overlaps at 3:00 and 9:00). In a 24-hour day, they form right angles 44 times.
115. At what angle are the hands of a clock inclined at 15 minutes past 5?
Correct Answer: c) 67.5 degrees
Explanation:
Angle = |30H - 5.5M|. H=5, M=15. |30*5 - 5.5*15| = |150 - 82.5| = 67.5 degrees.
116. Which of the following years is a leap year?
Correct Answer: c) 2000
Explanation:
Century years are leap years only if they are divisible by 400. 1900 is not, but 2000 is.
117. Today is Monday. After 61 days, it will be:
Correct Answer: d) Saturday
Explanation:
61 divided by 7 leaves a remainder of 5. Monday + 5 days = Saturday.
118. A die is rolled. What is the probability of getting a prime number?
Correct Answer: a) 1/2
Explanation:
A standard die has outcomes 1, 2, 3, 4, 5, 6. The prime numbers are 2, 3, and 5 (three outcomes). Probability = 3/6 = 1/2.
119. How many triangles are there in a square with both diagonals drawn?
Correct Answer: c) 8
Explanation:
There are 4 small distinct triangles formed by the diagonals. Combining them in pairs forms 4 larger triangles. Total = 4 + 4 = 8 triangles.
120. Find the missing number in the matrix pattern: Top row (3, 8, 11), Middle row (4, 9, 13), Bottom row (5, ?, 15)
Correct Answer: a) 10
Explanation:
In each row, the sum of the first two numbers equals the third number (3+8=11, 4+9=13). So, 5 + ? = 15, which means ? = 10.
