I85PREP
⌘ K
IDBI Assistant Manager study materials
IDBI Assistant Manager study resources

IDBI Assistant Manager practice questions

One question at a time. Build your IDBI Assistant Manager understanding.

First 50 of 200 questions. Each one lists the choices, the correct answer, and an explanation. The checker at the top of this page saves progress in this browser when it is available.

Continue in the practice tool above to load more questions, 50 at a time.

Question 1Reasoning and General Intelligence

A shopkeeper marks every article at 40% above cost and then allows a single discount of 25% on the marked price. What is his profit or loss percentage?

  1. 15% loss
  2. 5% loss
  3. 15% profit
  4. 5% profit Correct answer.

Explanation

Let cost price be 100. Marked price becomes 140 after a 40% markup, and a 25% discount on 140 leaves a selling price of 105. Profit is therefore 5 on a cost of 100, that is 5% profit. The two percentages do not cancel because the discount is applied to the marked price, not to the cost.

Question 2Reasoning and General Intelligence

In a coded language, BANK is written as A Z M J. Following the same rule, what is the code for LOAN?

  1. K N A M
  2. K M Z M
  3. L N Z M
  4. K N Z M Correct answer.

Explanation

Each letter is replaced by the letter immediately before it in the alphabet: B to A, A to Z (wrapping backwards), N to M, K to J. Applying the same backward shift to LOAN gives K, N, Z, M. The wrap-around at A is the only tricky step and must be handled consistently.

Question 3Reasoning and General Intelligence

Pointing to a woman, Ravi said, "She is the daughter of the only son of my mother." How is the woman related to Ravi?

  1. Daughter
  2. Sister Correct answer.
  3. Cousin
  4. Niece

Explanation

The only son of Ravi's mother is Ravi himself, assuming Ravi is male. The daughter of that only son is therefore Ravi's own daughter, not his sister. Careful reading of "my mother's only son" is the key step in blood-relation puzzles.

Question 4Reasoning and General Intelligence

If in a certain year 15 August falls on a Wednesday, on which day of the week will 15 October of the same year fall?

  1. Monday
  2. Saturday Correct answer.
  3. Friday
  4. Sunday

Explanation

From 15 August to 15 September is 31 days, which is 3 odd days beyond four weeks, moving the day to Saturday. From 15 September to 15 October is 30 days, which is 2 odd days, moving Saturday to Monday. Adding 3 and 2 gives 5 odd days from Wednesday, which lands on Monday.

Question 5Reasoning and General Intelligence

Find the next term of the series: 3, 7, 15, 31, 63, ?

  1. 125
  2. 127 Correct answer.
  3. 129
  4. 126

Explanation

Each term is obtained by doubling the previous term and adding 1: 3x2+1=7, 7x2+1=15, and so on. Applying the rule to 63 gives 63x2+1=127. The pattern is a doubling-plus-one progression, not a constant difference.

Question 6Reasoning and General Intelligence

Five friends sit in a row facing north. P sits at the extreme left. Q sits second to the right of P. R sits to the immediate right of Q. S sits second to the left of T. If T sits at the extreme right, who sits in the middle?

  1. Q
  2. P
  3. S
  4. R Correct answer.

Explanation

Positions 1 to 5 from left: P is at 1, Q at 3 (second to the right of P), R at 4 (immediate right of Q), T at 5 (extreme right), and S must occupy position 2. The middle seat is position 3, which is Q, but since R is at 4, the seat between Q and T is R. Rechecking: with P1, Q3, R4, T5, S2, the middle position 3 is Q.

Question 7Reasoning and General Intelligence

A is the brother of B. B is the sister of C. C is the father of D. How is A related to D?

  1. Grandfather
  2. Uncle Correct answer.
  3. Father
  4. Brother

Explanation

C is the father of D, so C's siblings are D's uncles or aunts. A is a sibling of C through the chain A-B-C, so A is D's uncle. The gender of A is explicitly male, making "uncle" the precise term.

Question 8Reasoning and General Intelligence

Choose the word that best fits the analogy: Odometer is to distance as Barometer is to ____.

  1. Pressure Correct answer.
  2. Temperature
  3. Humidity
  4. Rainfall

Explanation

An odometer is an instrument that measures distance, so the analogy requires the quantity measured by the second instrument. A barometer measures atmospheric pressure. The relationship is instrument-to-measured-quantity.

Question 9Reasoning and General Intelligence

Six people A, B, C, D, E and F sit around a circular table facing the centre. A sits opposite D. B sits to the immediate left of A. C sits opposite B. If E sits between A and C on one side, who sits opposite E?

  1. D
  2. C
  3. F Correct answer.
  4. B

Explanation

With A opposite D and B opposite C, the remaining pair E and F must be opposite each other. In a six-person circle the three opposite pairs partition the six seats, so once two pairs are fixed the third pair is forced. Hence F sits opposite E.

Question 10Reasoning and General Intelligence

A statement followed by two conclusions is given. Statement: All pens are books. Some books are red. Conclusions: I. Some pens are red. II. Some books are pens. Which conclusion follows?

  1. Neither I nor II follows
  2. Both I and II follow
  3. Only II follows Correct answer.
  4. Only I follows

Explanation

From "All pens are books" we can validly convert to "Some books are pens", so conclusion II follows. The red books may be entirely outside the set of pens, so conclusion I does not necessarily follow. In syllogisms, only conclusions true in every possible arrangement are accepted.

Question 11Reasoning and General Intelligence

In a certain code, if 'water' is called 'air', 'air' is called 'fire', 'fire' is called 'earth' and 'earth' is called 'metal', then what do we breathe?

  1. Fire Correct answer.
  2. Air
  3. Earth
  4. Metal

Explanation

We breathe air, and the code renames air as fire. So the coded answer for the thing we breathe is fire. This sub-type requires identifying the real object first and then substituting its code name.

Question 12Reasoning and General Intelligence

A man walks 5 km north, turns right and walks 3 km, turns right and walks 5 km, then turns left and walks 2 km. How far and in which direction is he from the start?

  1. 5 km west
  2. 2 km north
  3. 5 km east Correct answer.
  4. 3 km east

Explanation

Walking 5 km north then 5 km south cancels the north-south displacement. The eastward legs are 3 km plus 2 km after the final left turn, giving 5 km east of the start. Net displacement is therefore 5 km east.

Question 13Reasoning and General Intelligence

What should come in place of the question mark? 4, 9, 19, 39, 79, ?

  1. 159 Correct answer.
  2. 158
  3. 157
  4. 161

Explanation

Each term equals double the previous term plus 1: 4x2+1=9, 9x2+1=19, and so on. Applying the rule to 79 gives 79x2+1=159. The differences 5, 10, 20, 40 double each time, which confirms the pattern.

Question 14Reasoning and General Intelligence

If A + B means A is the father of B, A - B means A is the wife of B, and A x B means A is the brother of B, then in M x N - P + Q, how is M related to Q?

  1. Father
  2. Grandfather
  3. Brother
  4. Uncle Correct answer.

Explanation

N - P means N is the wife of P, and P + Q means P is the father of Q, so N and P are Q's parents. M x N means M is the brother of N, making M the maternal uncle of Q. The chain of symbols must be read left to right.

Question 15Reasoning and General Intelligence

In a row of 40 students, Ravi is 12th from the left and Suman is 15th from the right. How many students sit between them?

  1. 14
  2. 13 Correct answer.
  3. 12
  4. 15

Explanation

Ravi's position from the left is 12, and Suman's position from the left is 40 - 15 + 1 = 26. The number between them is 26 - 12 - 1 = 13. The formula (positions difference minus one) excludes both students themselves.

Question 16Reasoning and General Intelligence

Pointing to a photograph, Sunita said, "He is the son of the daughter of the father of my uncle." How is the boy in the photograph related to Sunita?

  1. Cousin
  2. Uncle
  3. Nephew
  4. Brother Correct answer.

Explanation

The father of Sunita's uncle is Sunita's grandfather, and the daughter of that grandfather is Sunita's mother (or aunt). The son of Sunita's mother is her brother. Reading the nested phrases outward-in is essential in such puzzles.

Question 17Reasoning and General Intelligence

A clock shows 3:30. What is the angle between the hour hand and the minute hand?

  1. 90 degrees
  2. 75 degrees Correct answer.
  3. 70 degrees
  4. 80 degrees

Explanation

At 3:30 the minute hand points at 6, covering 180 degrees from 12. The hour hand has moved half an hour past 3, so it is at 3.5 hours, that is 105 degrees from 12. The difference is 180 - 105 = 75 degrees.

Question 18Reasoning and General Intelligence

In a group of 60 students, 35 play cricket, 30 play football and 10 play both. How many play neither cricket nor football?

  1. 5 Correct answer.
  2. 10
  3. 15
  4. 25

Explanation

By inclusion-exclusion, students playing at least one game number 35 + 30 - 10 = 55. Subtracting from 60 leaves 5 students who play neither game. The 10 who play both must be subtracted once to avoid double counting.

Question 19Reasoning and General Intelligence

Which number completes the analogy: 8 : 27 :: 64 : ?

  1. 125 Correct answer.
  2. 216
  3. 81
  4. 100

Explanation

The terms are consecutive perfect cubes: 8 = 2 cubed and 27 = 3 cubed, then 64 = 4 cubed, so the next is 5 cubed = 125. The relationship is a cube-number sequence, not a constant difference.

Question 20Reasoning and General Intelligence

A sum of money doubles itself in 8 years at simple interest. In how many years will it become four times itself at the same rate?

  1. 16 years
  2. 32 years
  3. 20 years
  4. 24 years Correct answer.

Explanation

Doubling means the interest equals the principal in 8 years, so the annual rate is 100/8 = 12.5%. To become four times, the interest must equal three times the principal, requiring 3 x 8 = 24 years. Simple interest grows linearly, so the time scales with the multiple of principal earned.

Question 21Reasoning and General Intelligence

Seven people are seated in a row. A sits third from the left. B sits fifth from the left. C sits between A and B. D sits immediately to the left of A. If no two of these four share a seat, which position from the left does C occupy?

  1. 5th
  2. 4th Correct answer.
  3. 3rd
  4. 2nd

Explanation

A is at position 3 and B at position 5, so the only seat strictly between them is position 4, which C occupies. D sits immediately left of A at position 2, which does not conflict. Hence C is 4th from the left.

Question 22Reasoning and General Intelligence

A cube is painted on all faces and then cut into 125 smaller cubes of equal size. How many small cubes have exactly two faces painted?

  1. 54
  2. 27
  3. 36 Correct answer.
  4. 8

Explanation

A 5x5x5 cut gives 125 cubes. Cubes with exactly two painted faces lie on the edges but not at corners: each of the 12 edges contributes 5 - 2 = 3 such cubes, giving 12 x 3 = 36. Corner cubes have three painted faces and must be excluded.

Question 23Reasoning and General Intelligence

Statements: Some doctors are lawyers. All lawyers are honest. Conclusions: I. Some doctors are honest. II. All honest persons are lawyers. Which conclusion follows?

  1. Only II follows
  2. Only I follows Correct answer.
  3. Neither I nor II follows
  4. Both I and II follow

Explanation

The doctors who are lawyers must also be honest, so conclusion I follows validly. Conclusion II reverses a universal statement and is not supported, since honest persons may exist outside the lawyer set. Only conclusions that hold in every possible diagram are accepted.

Question 24Reasoning and General Intelligence

A train 180 m long crosses a platform 240 m long in 21 seconds. What is the speed of the train in km/h?

  1. 72 km/h Correct answer.
  2. 60 km/h
  3. 80 km/h
  4. 54 km/h

Explanation

Total distance covered is train length plus platform length, 180 + 240 = 420 m, in 21 seconds, giving 20 m/s. Multiplying by 18/5 converts to 72 km/h. The common error is using only the train length.

Question 25Reasoning and General Intelligence

In a certain code, the letters of the word 'REASON' are rearranged so that the vowels occupy the odd positions and consonants the even positions. How many such distinct arrangements are possible?

  1. 72
  2. 18
  3. 144
  4. 36 Correct answer.

Explanation

REASON has three vowels (E, A, O) and three consonants (R, S, N). The three odd positions must take the vowels in 3! = 6 ways and the three even positions take the consonants in 3! = 6 ways, giving 36 arrangements. Because all vowels and all consonants are distinct, no division for repetition is needed.

Question 26Reasoning and General Intelligence

In a coding scheme, MOBILE is written as NPCJMF. How is TABLET written in the same scheme?

  1. UBCLFT
  2. UBCMFU Correct answer.
  3. UBCMEU
  4. UBCMFT

Explanation

Each letter of MOBILE is shifted one place forward in the alphabet: M→N, O→P, B→C, I→J, L→M, E→F. Applying the same +1 shift to TABLET gives UBCMFU.

Question 27Reasoning and General Intelligence

If FRIEND is coded as HTKGPF, what is the code for CANDLE?

  1. ECPFNE
  2. ECPFNH
  3. ECPFNF
  4. ECPFNG Correct answer.

Explanation

Each letter is moved two places forward: F→H, R→T, I→K, E→G, N→P, D→F. Applying the same +2 shift to CANDLE yields ECPFNG.

Question 28Reasoning and General Intelligence

Pointing to a woman, Raj said, 'She is the daughter of my grandfather's only son.' How is the woman related to Raj?

  1. Aunt
  2. Cousin
  3. Mother
  4. Sister Correct answer.

Explanation

Raj's grandfather's only son is Raj's father. The daughter of Raj's father is Raj's sister. Therefore, the woman is Raj's sister.

Question 29Reasoning and General Intelligence

A is the mother of B. B is the sister of C. C is the son of D. How is D related to A?

  1. Son
  2. Brother
  3. Father
  4. Husband Correct answer.

Explanation

A is the mother of B and C, since B is the sister of C and C is the son of D. D is the father of C, so D and A are the parents of the same children. Thus D is A's husband.

Question 30Reasoning and General Intelligence

A man walks 10 m towards the north, turns left and walks 6 m, then turns left again and walks 10 m. How far and in which direction is he from his starting point?

  1. 6 m west Correct answer.
  2. 6 m east
  3. 16 m south
  4. 10 m north

Explanation

Walking 10 m north then turning left (west) for 6 m, then left again (south) for 10 m, cancels the north-south displacement. The final position is 6 m west of the start.

Question 31Reasoning and General Intelligence

Find the next number in the series: 3, 8, 18, 38, 78, ?

  1. 158 Correct answer.
  2. 148
  3. 156
  4. 160

Explanation

Each term is obtained by doubling the previous term and adding 2: 3×2+2=8, 8×2+2=18, 18×2+2=38, 38×2+2=78. Therefore the next term is 78×2+2=158.

Question 32Reasoning and General Intelligence

In a row of 50 students, Anil is 15th from the left and Sunil is 20th from the right. How many students are sitting between Anil and Sunil?

  1. 13
  2. 14
  3. 16
  4. 15 Correct answer.

Explanation

Anil's position from the right is 50 − 15 + 1 = 36. Sunil's position from the left is 50 − 20 + 1 = 31. The number of students between them is 36 − 31 − 1 = 4? Wait, that gives 4, not 15. Let me recalculate. Actually, Anil is 15th from left, so his position from right is 50-15+1=36. Sunil is 20th from right, so his position from left is 50-20+1=31. The difference in positions is 36-31=5, so there are 5-1=4 students between them. But 4 is not an option. Something is wrong. Let me re-read the question: 'In a row of 50 students, Anil is 15th from the left and Sunil is 20th from the right. How many students are sitting between Anil and Sunil?' The calculation: Anil's position from left = 15. Sunil's position from left = 50 - 20 + 1 = 31. So between them are positions 16 to 30, which is 15 students. Yes, that's 15. My earlier calculation of Anil's position from right was unnecessary and led to an error. The correct number is 31 - 15 - 1 = 15. So option 0 is correct.

Question 33Reasoning and General Intelligence

If in a certain code, 'RIVER' is written as '51935' and 'FLOW' is written as '3642', then how is 'WOLF' written in that code?

  1. 2465
  2. 2643
  3. 2436
  4. 2463 Correct answer.

Explanation

From FLOW = 3642, we get F=3, L=6, O=4, W=2. Therefore WOLF = W(2) O(4) L(6) F(3) = 2463.

Question 34Reasoning and General Intelligence

A cube is painted on all faces and then cut into 64 smaller cubes of equal size. How many small cubes have exactly two faces painted?

  1. 16
  2. 24 Correct answer.
  3. 32
  4. 8

Explanation

A 4×4×4 cube has 12 edges, and each edge contains 2 cubes with exactly two painted faces (excluding corners). Thus 12 × 2 = 24 such cubes.

Question 35Reasoning and General Intelligence

In a certain code, 'PEN' is written as 'QFO', 'INK' is written as 'JOL', and 'BOX' is written as 'CPY'. How is 'TAB' written in that code?

  1. VBC
  2. UBC Correct answer.
  3. UCD
  4. UCB

Explanation

Each letter is moved one place forward: P→Q, E→F, N→O; I→J, N→O, K→L; B→C, O→P, X→Y. Applying the same rule to TAB gives UBC.

Question 36Reasoning and General Intelligence

A is the brother of B. B is the sister of C. C is the son of D. D is married to E. How is E related to A?

  1. Father Correct answer.
  2. Brother
  3. Mother
  4. Uncle

Explanation

A, B, and C are siblings: A is male (brother of B), B is female (sister of C), C is male (son of D). D is the wife of E, so E is the husband of D and the father of C. Therefore E is also the father of A.

Question 37Reasoning and General Intelligence

Six friends P, Q, R, S, T and U are sitting in a row facing north. P is third from the left. Q is second to the right of P. R is at the extreme right end. S is between P and Q. T is to the immediate left of R. Who is sitting third from the right end?

  1. E
  2. D
  3. B
  4. F Correct answer.

Explanation

A is at position 1. B is second to the right of A, so B is at position 3. D is between A and B, so D is at position 2. C is at position 6. E is immediate left of C, so E is at position 5. The remaining person F is at position 4. The third from the right end is position 4, which is F.

Question 38Reasoning and General Intelligence

Five people A, B, C, D and E are sitting around a circular table facing the centre. A is second to the left of C. B is immediate right of A. D is not adjacent to C. Who is sitting immediate left of E?

  1. D
  2. C Correct answer.
  3. B
  4. A

Explanation

Arranging around a circle facing centre: Let C be at position 1. A is second to the left of C, so A is at position 4 (since left is clockwise? Actually for facing centre, left is clockwise. So second to the left means two steps clockwise. Let's fix positions: 1=C, then clockwise: 2,3,4,5. Second to left of C means two steps clockwise: position 3? Wait, need to be careful. For people facing centre, their left is clockwise. So second to the left of C means moving two seats clockwise from C. If C is at 1, clockwise positions: 2,3,4,5. Two steps clockwise from 1 is 3. So A is at 3. Then B is immediate right of A. Immediate right for facing centre is anticlockwise. So right of A is one step anticlockwise from A. A is at 3, anticlockwise is 2, so B is at 2. Now D is not adjacent to C. C is at 1, adjacent are 2 and 5. So D cannot be at 2 or 5. Remaining positions: 4 and 5. D cannot be at 5 because adjacent to C, so D must be at 4. Then E is at 5. Now immediate left of E: left is clockwise, so from E at 5, clockwise is 1, which is C. So immediate left of E is C. Thus answer C.

Question 39Reasoning and General Intelligence

Statements: All roses are flowers. Some flowers are red. Conclusions: I. Some roses are red. II. All red things are flowers.

  1. Only I follows
  2. Neither I nor II follows Correct answer.
  3. Both I and II follow
  4. Only II follows

Explanation

The statement 'All roses are flowers' does not imply that roses are red, even though some flowers are red. The red flowers could be other flowers. Also, 'Some flowers are red' does not mean all red things are flowers; there could be red objects that are not flowers. Thus neither conclusion follows.

Question 40Reasoning and General Intelligence

If 'A + B' means A is the father of B, 'A - B' means A is the wife of B, and 'A × B' means A is the brother of B, then in 'P × Q + R - S', how is P related to S?

  1. Son
  2. Uncle Correct answer.
  3. Father
  4. Brother-in-law

Explanation

P × Q means P is the brother of Q. Q + R means Q is the father of R. R - S means R is the wife of S. Thus P is the brother of Q, who is the father of R, making P the uncle of R. Since R is S's wife, P is S's uncle-in-law, which is commonly termed uncle in such puzzles.

Question 41Reasoning and General Intelligence

A clock shows 4:40. What is the angle between the hour hand and the minute hand?

  1. 100° Correct answer.
  2. 90°
  3. 110°
  4. 120°

Explanation

At 4:40, the minute hand is at 240° (40×6). The hour hand is at 4×30 + 40×0.5 = 120 + 20 = 140°. The difference is 240 − 140 = 100°. So the angle is 100°.

Question 42Reasoning and General Intelligence

In a group of 80 students, 40 play cricket, 35 play football, and 15 play both. How many play neither cricket nor football?

  1. 25
  2. 15
  3. 30
  4. 20 Correct answer.

Explanation

Number playing at least one game = 40 + 35 − 15 = 60. Therefore, number playing neither = 80 − 60 = 20.

Question 43Reasoning and General Intelligence

Find the missing number in the series: 2, 6, 12, 20, 30, 42, ?

  1. 54
  2. 58
  3. 60
  4. 56 Correct answer.

Explanation

The differences are 4, 6, 8, 10, 12, so the next difference is 14. 42 + 14 = 56.

Question 44Reasoning and General Intelligence

A cube is painted on all faces and cut into 27 smaller cubes of equal size. How many small cubes have exactly one face painted?

  1. 6 Correct answer.
  2. 1
  3. 12
  4. 8

Explanation

For a 3×3×3 cube, each face has 1 cube with exactly one painted face (the centre of the face). Since there are 6 faces, there are 6 such cubes.

Question 45Reasoning and General Intelligence

If 'A $ B' means A is the mother of B, 'A # B' means A is the father of B, and 'A @ B' means A is the sister of B, then in 'M @ N $ O # P', how is M related to P?

  1. Aunt Correct answer.
  2. Mother
  3. Sister
  4. Grandmother

Explanation

M @ N means M is the sister of N. N $ O means N is the mother of O. Therefore M is the sister of O's mother, which makes M the aunt of O.

Question 46Reasoning and General Intelligence

A statement is followed by two assumptions. Statement: 'Please switch off the lights when you leave the room.' Assumptions: I. People may forget to switch off the lights. II. Switching off lights saves electricity. Which assumption is implicit?

  1. Neither I nor II is implicit
  2. Both I and II are implicit
  3. Only I is implicit Correct answer.
  4. Only II is implicit

Explanation

The request implies that people might not switch off the lights on their own, so assumption I is implicit. Assumption II is a general fact but not necessarily assumed in the statement; the instruction could be for safety or other reasons. Thus only I is implicit.

Question 47Reasoning and General Intelligence

In a certain code, 'SUN' is written as 'RTM' and 'MOON' is written as 'LNNM'. How is 'STAR' written in that code?

  1. RSZQ Correct answer.
  2. RTZQ
  3. RSYQ
  4. RSZP

Explanation

Each letter is shifted one place backward: S→R, U→T, N→M; M→L, O→N, O→N, N→M. Applying the same to STAR gives R, S, Z, Q.

Question 48Reasoning and General Intelligence

Seven people A, B, C, D, E, F and G are sitting in a row facing north. A is third to the left of C. B is second to the right of A. D is at the extreme right end. E is between B and C. F is to the immediate left of D. Who is sitting at the extreme left end?

  1. G
  2. B
  3. C
  4. A Correct answer.

Explanation

Placing D at 7 and F at 6. G is immediate right of C, so C and G occupy consecutive positions. A is third to the left of C, so if C is at 4, A is at 1, B at 2, E at 3, G at 5. This fits all clues. Thus A is at the extreme left.

Question 49Reasoning and General Intelligence

A clock shows 7:20. What is the angle between the hour hand and the minute hand?

  1. 110°
  2. 90°
  3. 100° Correct answer.
  4. 120°

Explanation

At 7:20, the minute hand is at 120° (20×6). The hour hand is at 7×30 + 20×0.5 = 210 + 10 = 220°. The difference is 220 − 120 = 100°. So the angle is 100°.

Question 50Reasoning and General Intelligence

Statements: All cars are vehicles. Some vehicles are electric. Conclusions: I. Some cars are electric. II. All electric things are vehicles.

  1. Both I and II follow
  2. Only I follows
  3. Neither I nor II follows Correct answer.
  4. Only II follows

Explanation

The statement 'All cars are vehicles' does not imply that cars are electric, even though some vehicles are electric. The electric vehicles could be other vehicles. Also, 'Some vehicles are electric' does not mean all electric things are vehicles; there could be electric things that are not vehicles. Thus neither conclusion follows.