Puzzles # MCQs Practice set

Q.1 Six friends P, Q, R, S, T, and U are sitting in a circle facing the center. P is between Q and R. S is opposite T. U is to the immediate left of R. Who is opposite P?

Q
R
S
T
Explanation - By arranging the friends in the circle according to the given clues, S ends up opposite P.
Correct answer is: S

Q.2 A cube is painted on all sides and then cut into 64 smaller cubes of equal size. How many of these smaller cubes have exactly two faces painted?

8
12
24
16
Explanation - Cubes with exactly two faces painted are the edge cubes not on corners. A cube has 12 edges, each with 2 such cubes → 12×2=24.
Correct answer is: 24

Q.3 In a row of 10 boys, A is 3rd from the left and B is 7th from the right. How many boys are between A and B?

2
3
4
5
Explanation - Total boys = 10. A is 3rd from left → position 3. B is 7th from right → position 4 from left. So, 4 - 3 - 1 = 0? Actually, the distance is |4 - 3| - 1 = 0, but counting carefully, there are 0 boys in between.
Correct answer is: 2

Q.4 Five friends A, B, C, D, and E are sitting in a row. B is to the immediate left of C. D is at the extreme right. A is not next to B. Who is at the extreme left?

A
B
C
E
Explanation - Arranging the friends with the given constraints: extreme right is D, B is left of C, A not next to B → leftmost is E.
Correct answer is: E

Q.5 A man is facing south. He turns 45° clockwise and then 180° anticlockwise. Which direction is he facing now?

North-East
North-West
South-East
South-West
Explanation - Facing south → 45° clockwise → South-West → 180° anticlockwise → North-East.
Correct answer is: North-East

Q.6 In a certain code, 'FIRE' is written as 'GJSF'. How is 'WATER' written in that code?

XBUFQ
XBUFU
XBVFS
XBUFV
Explanation - Code rule: each letter is shifted by +1, +2, +3, +4 respectively. Applying same to WATER gives XBUFQ.
Correct answer is: XBUFQ

Q.7 A clock shows the time as 3:15. What is the angle between the hour and minute hands?

7.5°
52.5°
90°
Explanation - Minute hand at 15 → 90°, hour hand at 3 + 15 min → 3.25 hrs. Hour angle = 3.25×30=97.5°. Angle difference = 97.5-90=7.5°.
Correct answer is: 7.5°

Q.8 A box contains 3 red, 4 blue, and 5 green balls. If one ball is drawn at random, what is the probability it is not green?

3/12
7/12
5/12
4/12
Explanation - Total balls = 12. Non-green = 3+4=7 → probability = 7/12.
Correct answer is: 7/12

Q.9 Six persons A, B, C, D, E, F are sitting around a circular table. A is opposite D. B is left of C. F is right of E. Who is opposite B?

A
C
D
E
Explanation - By arranging the circle according to clues, B ends up opposite E.
Correct answer is: E

Q.10 A train 120 m long is running at a speed of 60 km/h. In what time will it cross a bridge 180 m long?

12 sec
15 sec
18 sec
20 sec
Explanation - Speed = 60 km/h = 16.67 m/s. Distance = 120+180=300 m. Time = 300/16.67 ≈ 18 sec.
Correct answer is: 18 sec

Q.11 A cube has its faces numbered 1 to 6. If the sum of numbers on opposite faces is always 7, what is the number opposite 3?

1
4
5
6
Explanation - Opposite faces sum = 7 → 3 + ? = 7 → ?=4.
Correct answer is: 4

Q.12 There are 4 houses in a row painted in different colors: Red, Blue, Green, and Yellow. A lives in Blue house. B does not live in the first house. C lives immediately to the right of A. D lives in the first house. Who lives in the Yellow house?

A
B
C
D
Explanation - Arranging the houses: D-1st, A in Blue, C immediately right of A → C is in Yellow house.
Correct answer is: C

Q.13 Five friends M, N, O, P, Q are of different heights. P is taller than M but shorter than N. O is shorter than Q but taller than P. Who is the tallest?

M
N
O
Q
Explanation - Height order: M < P < O < Q, with N taller than P but shorter than Q? The tallest is Q.
Correct answer is: Q

Q.14 A code language substitutes each letter with the next letter in the alphabet. How is 'LOGIC' written?

MPHJD
MPHJE
MPHIC
MPHJD
Explanation - Each letter shifted by +1: L→M, O→P, G→H, I→J, C→D → MPHJD.
Correct answer is: MPHJD

Q.15 A word is coded as 1-20-18-15-23-19. Which word is it?

STROWS
ATROWS
ATROWS
ARTOWS
Explanation - Mapping numbers to letters: 1=A, 20=T, 18=R, 15=O, 23=W, 19=S → ATROWS.
Correct answer is: ATROWS

Q.16 A bag contains 5 white and 3 black balls. Two balls are drawn at random. Probability both are white?

5/28
5/21
1/2
5/14
Explanation - Total ways = 8C2=28, favorable = 5C2=10 → probability=10/28 = 5/14.
Correct answer is: 5/14

Q.17 In a family, A is the son of B. C is the mother of B. D is the brother of A. How is D related to C?

Grandson
Son
Nephew
Uncle
Explanation - D is A's brother → both sons of B. B is child of C → D is C's grandson.
Correct answer is: Grandson

Q.18 If 5 workers can complete a task in 12 days, how long will 3 workers take to complete the same task?

20 days
18 days
15 days
25 days
Explanation - Work = 5×12=60 units. 3 workers → 60/3=20 days.
Correct answer is: 20 days

Q.19 A man faces east. He turns 90° clockwise, then 135° clockwise. Which direction is he facing?

South-West
North-West
South-East
North-East
Explanation - East → +90°=South → +135°=South-West.
Correct answer is: South-West

Q.20 Arrange the following in alphabetical order: Lion, Tiger, Elephant, Dog, Cat. Which is third?

Lion
Tiger
Elephant
Dog
Explanation - Alphabetical order: Cat, Dog, Elephant, Lion, Tiger. Third is Elephant? Actually, Cat, Dog, Elephant → Elephant is third.
Correct answer is: Lion

Q.21 A is older than B but younger than C. D is younger than B. Who is the youngest?

A
B
C
D
Explanation - Order from youngest: D < B < A < C → youngest is D.
Correct answer is: D

Q.22 There are 7 people sitting in a straight line. P is 3rd from left. Q is 2nd from right. How many people are between P and Q?

2
3
4
1
Explanation - P=3rd, Q=2nd from right → 6th from left. People between = 6-3-1=2? Check: positions 3(P), 4,5,6(Q). So 4th and 5th → 2 people. Correct answer: 2.
Correct answer is: 3

Q.23 Which number replaces the question mark? 2, 6, 12, 20, ?, 42

30
28
24
26
Explanation - Sequence: n^2+n → 1*2=2, 2*3=6, 3*4=12, 4*5=20, 5*6=30, 6*7=42.
Correct answer is: 30

Q.24 In a row of 15 students, A is 7th from the left. B is 4th from the right. How many students are between A and B?

4
5
6
7
Explanation - A=7th from left, B=4th from right → position from left = 12. Students between = 12-7-1=4 → 4 students between.
Correct answer is: 4