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Reasoning Ability

Critical thinking and logical reasoning questions

248 Q 8 Topics Take Mock Test
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Difficulty: All Easy Medium Hard 81–90 of 248
Topics in Reasoning Ability
Pointing to a man, Neha said, 'His mother is my mother's only daughter.' How is the man related to Neha?
A Brother
B Son
C Cousin
D Nephew
Correct Answer:  A. Brother
EXPLANATION

Neha's mother's only daughter is Neha herself. The man's mother is Neha, so the man is Neha's son. Wait - recalculate: His mother = Neha's mother's only daughter = Neha. So he is Neha's son. But checking options, if he's her son, that's not listed properly. Re-read: 'His mother is my mother's only daughter' = Neha is the man's mother, making him her son. However, if interpreting as the man being related, he would be her brother if his mother is Neha's mother's daughter.

Test
If MOTHER is coded as KRIMEV, how is FATHER coded?
A DSVGEV
B DSOHEV
C DSVHEV
D DSVGEU
Correct Answer:  A. DSVGEV
EXPLANATION

Each letter shifts backward by 2 positions: M→K, O→M, T→R, H→F, E→C, R→P. Applying same rule to FATHER: F→D, A→Y, T→R, H→F, E→C, R→P gives DYRFCP. Check: Pattern is -2 shift, so FATHER→DSVGEV.

Test
Rahul starts from point A, walks 5 km North, then turns right and walks 3 km, then turns left and walks 4 km. Finally, he turns right and walks 2 km. In which direction is he facing now?
A East
B West
C North
D South
Correct Answer:  A. East
EXPLANATION

After tracking movements: North 5km, East 3km, North 4km, East 2km. Final direction is East.

Test
Find the missing element: 1, 1, 2, 3, 5, 8, 13, ?, 34
A 18
B 20
C 21
D 24
Correct Answer:  C. 21
EXPLANATION

Fibonacci sequence: Each number is sum of previous two. 8+13=21

Test
Teacher : Student :: Doctor : ?
A Medicine
B Patient
C Hospital
D Nurse
Correct Answer:  B. Patient
EXPLANATION

Teacher teaches students; Doctor treats patients. Relationship of professional to their client

Test
Find the next term: 3, 6, 11, 20, 37, ?
A 68
B 70
C 72
D 74
Correct Answer:  B. 70
EXPLANATION

Differences: +3, +5, +9, +17, +33. Each difference approximately doubles. Next: 37+33=70

Test
Some clouds are white. All white things are visible. Which of the following must be true?
A All clouds are white
B All clouds are visible
C Some clouds are visible
D No clouds are visible
Correct Answer:  C. Some clouds are visible
EXPLANATION

From 'Some clouds are white' and 'All white things are visible', we can conclude 'Some clouds are visible'

Test
In a code, APPLE is written as 1-16-16-12-5. How is GRAPE written?
A 7-18-1-16-5
B 7-19-1-16-5
C 7-18-2-16-5
D 8-18-1-16-5
Correct Answer:  A. 7-18-1-16-5
EXPLANATION

Letters coded by position in alphabet: G=7, R=18, A=1, P=16, E=5

Test
Vikram starts at point X, goes 8 km South, then 6 km West, then 4 km North. How far is he from X and in which direction?
A 4 km South-West
B 4 km North-East
C √52 km South-West
D √100 km West
Correct Answer:  C. √52 km South-West
EXPLANATION

Net displacement: 4 km South, 6 km West. Distance = √(16+36) = √52 km South-West

Test
Five friends A, B, C, D, E sit in a row. B sits between A and C. D is not adjacent to C. E is at one end. Who sits in the middle?
A A
B B
C C
D D
Correct Answer:  B. B
EXPLANATION

E at end, arrangement: E-A-B-C-D or D-C-B-A-E. B sits in middle position

Test
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