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?

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

In a series: 5, 11, 19, 29, 41, ?, what is the next number?

The correct answer is A: 55. Differences are: 6, 8, 10, 12, and next difference is 14. So 41 + 14 = 55

All flowers are plants. Some plants are vegetables. Conclusion: Some flowers are vegetables. Valid or Invalid?

The correct answer is B: Invalid. All flowers are plants, but only SOME plants are vegetables. We cannot conclude that some flowers are vegetables without knowing if flowers overlap with the vegetables category.

Pointing to a photograph, a woman says, 'He is the son of my mother's only brother.' Who is the man in the photograph to the woman?

The correct answer is A: Cousin. My mother's only brother = my uncle. My uncle's son = my cousin. Therefore, the man in the photograph is the woman's cousin.

All mammals are vertebrates. Some vertebrates are aquatic. No aquatic animals are terrestrial. Which of the following must be true?

The correct answer is D: Some mammals are not terrestrial. Since some vertebrates are aquatic and no aquatic animals are terrestrial, some vertebrates (aquatic ones) are not terrestrial. Mammals are vertebrates, so some mammals may not be terrestrial.

Home

Home › Subjects › Reasoning Ability

Reasoning Ability

Critical thinking and logical reasoning questions

248 Q 8 Topics Take Mock Test

Difficulty: All Easy Medium Hard 111–120 of 248

Topics in Reasoning Ability

All Puzzles & Seating Arrangement 172 Syllogism 50 Coding-Decoding 50 Blood Relations 50 Direction & Distance 50 Inequalities 50 Series & Analogies 50 Ranking & Order 50

Q.111 Medium Blood Relations

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

A Uncle

B Father

C Grandfather

D Cousin

Correct Answer: A. Uncle

EXPLANATION

A is brother of B, B is sister of C (so A and C are siblings), C is mother of D. Therefore A is uncle of D.

Test

Q.112 Medium Blood Relations

Pointing to a man, a woman said, 'His mother is the only daughter of my mother.' How is that man related to the woman?

A Son

B Nephew

C Brother

D Cousin

Correct Answer: A. Son

EXPLANATION

The only daughter of my mother = myself. So his mother is the woman. Therefore, the man is her son.

Test

Q.113 Medium Coding-Decoding

Statement I: All engineers are intelligent. Statement II: Some intelligent people are not engineers. Conclusion: Some engineers are not intelligent. Which is valid?

A Conclusion follows from both statements

B Conclusion follows from neither

C Conclusion contradicts the statements

D Conclusion partially follows

Correct Answer: C. Conclusion contradicts the statements

EXPLANATION

If ALL engineers are intelligent (Statement I), then NO engineer can be non-intelligent. The conclusion contradicts Statement I.

Test

Q.114 Medium Coding-Decoding

In a row of 6 people, P is to the left of Q. R is to the right of Q. S is between P and Q. T is at one end. Where is U? (Additional constraint: Q is not at the rightmost end)

A Between R and Q

B To the right of R

C Between S and P

D At the rightmost end

Correct Answer: B. To the right of R

EXPLANATION

Arrangement from left: T-P-S-Q-R-U. T is at left end, P-S-Q-R is the order given, U must be to the right of R

Test

Q.115 Medium Coding-Decoding

Series: 3, 7, 15, 31, 63, ?
What comes next?

A 127

B 125

C 124

D 126

Correct Answer: A. 127

EXPLANATION

Pattern: 2¹+1=3, 2³-1=7, 2⁴-1=15, 2⁵-1=31, 2⁶-1=63, 2⁷-1=127. Each is 2ⁿ-1 where n starts at 2

Test

Q.116 Medium Coding-Decoding

If TIGER is coded as 20-9-7-5-18, how is ZEBRA coded?

A 26-5-2-18-1

B 25-4-1-17-0

C 26-4-2-19-1

D 24-6-3-20-2

Correct Answer: A. 26-5-2-18-1

EXPLANATION

Letters coded by position in alphabet. Z=26, E=5, B=2, R=18, A=1. Answer is 26-5-2-18-1

Test

Q.117 Medium Coding-Decoding

Statement: All students are hardworking. No lazy person is hardworking. Conclusion: No student is lazy.

A The conclusion follows

B The conclusion does not follow

C Data insufficient

D Partially follows

Correct Answer: A. The conclusion follows

EXPLANATION

If all students are hardworking and no lazy person is hardworking, then logically no student can be lazy.

Test

Q.118 Medium Coding-Decoding

A girl leaves home at 9 AM, walks North for 2 km, turns West for 3 km, turns South for 4 km. In which direction is she from home?

A Southwest

B Northwest

C Southeast

D Northeast

Correct Answer: A. Southwest

EXPLANATION

Net: 3 km West, 2 km South (4-2). She is Southwest of home.

Test

Q.119 Medium Coding-Decoding

Series: 1, 1, 2, 3, 5, 8, 13, ?

A 21

B 20

C 19

D 18

Correct Answer: A. 21

EXPLANATION

Fibonacci sequence where each number is sum of previous two. 8+13=21

Test

Q.120 Medium Coding-Decoding

Five boxes are arranged in order of weight. Box C is heavier than Box A. Box B is lighter than Box D. Box E is the heaviest. Box A is lighter than Box B. Which box is the lightest?

A A

B B

C C

D D

Correct Answer: A. A

EXPLANATION

From A<B<D and A<C and E is heaviest. Testing: A<B, A<C, B<D, E heaviest. A is lightest.

Test

1…10 11 12 13 14…25

All Subjects & Topics

Govt. Exams

Entrance Exams

Teacher Exams

Subjects

Quick Links

Reasoning Ability