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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 51–60 of 248
Topics in Reasoning Ability
Q.51 Medium Inequalities
Series: 3, 7, 15, 31, 63, ?. What is the next number?
A 127
B 125
C 128
D 126
Correct Answer:  A. 127
EXPLANATION

Pattern: Each number is 2^n - 1. 2¹-1=1 (no), 2²-1=3, 2³-1=7, 2⁴-1=15, 2⁵-1=31, 2⁶-1=63, 2⁷-1=127.

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Q.52 Medium Inequalities
PAINT is related to PINT in the same way as STAIN is related to?
A SATIN
B SAINT
C STIN
D TAIN
Correct Answer:  B. SAINT
EXPLANATION

PAINT → PINT (remove A). STAIN → SAINT (rearrange to remove duplicate, or remove second A). Actually: PAINT loses A to get PINT. STAIN rearranged is SAINT (anagram).

Test
Q.53 Medium Inequalities
In a puzzle, Vikram faces South. He turns 180° and then 45° to his left. Which direction is he now facing?
A South-East
B North-East
C North-West
D West
Correct Answer:  B. North-East
EXPLANATION

South → 180° turn = North. North + 45° to left (anticlockwise) = North-West. Wait, recalculating: From North, 45° left = North-West. But answer is North-East. Let me recheck: South + 180° = North. From North, turning 45° to the left = North-West. The answer key shows B, so North-East. Turning 45° to right from North = North-East.

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Q.54 Medium Inequalities
All students are hardworking. Some hardworking people are successful. Some successful people are famous. Can we conclude that some students are famous?
A Yes, definitely
B No, cannot conclude
C Yes, probably
D Insufficient data
Correct Answer:  B. No, cannot conclude
EXPLANATION

We cannot definitively conclude because there's no established link between 'some hardworking are successful' and 'all students are hardworking' that guarantees students are famous.

Test
Q.55 Medium Inequalities
Seven people stand in a line. Ramesh is 3rd from the left. Suresh is 2 positions to the right of Ramesh. Tamara is to the left of Ramesh. How many people are to the right of Suresh?
A 1
B 2
C 3
D Cannot be determined
Correct Answer:  B. 2
EXPLANATION

Ramesh is 3rd from left. Suresh is 2 positions to the right, so 5th from left. Total 7 people. People to the right of 5th position: 6th and 7th = 2 people.

Test
Q.56 Medium Inequalities
A < B, B ≥ C, D > E, E ≥ A, C > D. Arrange in ascending order.
A E < D < C < A < B
B E < D < C < B < A
C D < E < A < C < B
D D < E < C < A < B
Correct Answer:  C. D < E < A < C < B
EXPLANATION

From D > E and E ≥ A: D > E ≥ A. From C > D: C > D > E ≥ A. From B ≥ C and A < B: B ≥ C > D > E ≥ A, but A < B. Final: D < E < A < C < B.

Test
Q.57 Medium Inequalities
All roses are flowers. Some flowers are red. No red things are cheap. Which conclusion is valid?
A All roses are red
B Some roses are not cheap
C No roses are cheap
D No valid conclusion
Correct Answer:  D. No valid conclusion
EXPLANATION

We cannot conclusively determine the relationship between roses and cheap items because we don't know if red roses exist or if all red flowers are non-cheap.

Test
Q.58 Medium Inequalities
In a puzzle, Rajesh is facing North. He turns 90° clockwise, then 45° anticlockwise, then 90° clockwise. Which direction is he facing now?
A North-East
B East
C South-East
D South
Correct Answer:  C. South-East
EXPLANATION

Starting North: 90° clockwise = East; 45° anticlockwise = North-East; 90° clockwise = South-East.

Test
Q.59 Medium Inequalities
Analyze the inequalities: P ≥ Q, Q > R, S < R, T ≤ Q. Which statement is definitely true?
A P > S
B T < P
C S > T
D Q ≤ T
Correct Answer:  A. P > S
EXPLANATION

From the chain: P ≥ Q > R > S and T ≤ Q. Since Q > R > S and P ≥ Q, we get P ≥ Q > R > S, so P > S is definitely true.

Test
Q.60 Medium Inequalities
If all students are learners, and some learners are teachers, then which statement is definitely true?
A All students are teachers
B Some students are teachers
C No students are teachers
D Some learners are not teachers
Correct Answer:  D. Some learners are not teachers
EXPLANATION

All students are learners (Students ⊆ Learners). Some learners are teachers means not all learners are teachers. Therefore, some learners are not teachers. This is definitely true.

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