3100+ Mental Ability Reasoning Questions and Answers with Explanation

Q:

prp qrp prr pqr qrp rpr qqr rpr qpr qrr qpr qpr

If every third letter starting from the left is replaced by a number beginning with 1 then which letter/ number will be 16th from the right?

A) q	B) r
C) 6	D) 7

Answer & Explanation Answer: D) 7

Explanation:

New sequence is as follows:

pr1 qr2 pr3 pq4 qr5 rp6 qq7 rp8 qp9 qr10 qp11 qp12

16th from the right end is 7

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Filed Under: Number Series

8 68535

Q:

Arrange the given words in the sequence in which they occur in the dictionary.

1. Herbivorous

2. Harmony

3. House

4. Honour

5. Helm

A) 12543	B) 25143
C) 21534	D) 12354

Answer & Explanation Answer: B) 25143

Explanation:

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Filed Under: Logical Sequence of Words
Exam Prep: Bank Exams

2 68474

Q:

Find the next number in the given number sequence?

4, 15, 37, 81, ?

A) 196	B) 169
C) 144	D) 121

Answer & Explanation Answer: B) 169

Explanation:

The given number series follows a pattern that, 4, 15, 37, 81, ?

4

4 + 11 = 15

15 + 22 = 37

37 + 44 = 81

81 + 88 = 169

Hence, the next number in the sequence is 169.

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Filed Under: Number Series
Exam Prep: AIEEE , Bank Exams , CAT , GATE , GRE
Job Role: Analyst , Bank Clerk , Bank PO , Database Administration , IT Trainer

10 68412

Q:

I. A, B, C, D, E and F are six members of a family.

II. One couple has parents and their children in the family.

III. A is the son of C and E is the daughter of A.

IV. D is the daughter of F who is the mother of E.

Who are the male members in the family ?

A) A and C	B) C and F
C) A, B and D	D) Cannot be determined

Answer & Explanation Answer: D) Cannot be determined

Explanation:

E is the daughter of A and F is the mother of E. So, A is the father of E and hence the husband of F. Now,

D is the daughter of F. So, D and E are the daughters of A and F Also. A is the son of C.

Now, only B remains. Thus, B and C are the parents of A.

The sex of B and C cannot be determined:

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Filed Under: Blood Relations

4 68327

Q:

Which digits will come in the place of '?' in the following series ?

372, 823, 644, 582, 46?, 8?7

A) 4, 4	B) 6, 2
C) 3, 2	D) 2, 5

Answer & Explanation Answer: B) 6, 2

Explanation:

Given series is 372, 823, 644, 582, 46?, 8?7

Here the series follow the rule that :
372 = 3+7+2 = 12
823 = 8+2+3 = 13
644 = 6+4+4 = 14
582 = 5+8+2 = 15
46? = 4+6+? = 16 => ? = 6
8?7 = 8+?+7 = 17 => ? = 2

So the missing numbers are 6 and 2

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Filed Under: Number Series
Exam Prep: AIEEE , Bank Exams , CAT , GATE , GRE , TOEFL
Job Role: Bank Clerk , Bank PO

21 67902

Q:

Select the related word/letters/number from the given alternatives.

IJ : PR : : ? : SU

A) IJ	B) LM
C) EF	D) LI

Answer & Explanation Answer: B) LM

Explanation:

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Filed Under: Analogy
Exam Prep: AIEEE , Bank Exams , CAT

0 67840

Q:

A woman introduces a man as the son of the brother of her mother. How is the man, related to the woman ?

A) Nephew	B) Son
C) Cousin	D) Uncle to Grandson

Answer & Explanation Answer: C) Cousin

Explanation:

Brother of mother — Uncle: Uncle's son — Cousin

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Filed Under: Blood Relations

706 67383

Q:

If 60#40 = 10, 40#20 = 6 and 60#90 = 15, then find the value of 40#30 = ?

A) 15	B) 12
C) 18	D) 7

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