3100+ Mental Ability Reasoning Questions and Answers with Explanation

Q:

8 is related to 81 in the same way as 64 is related to ____

A) 225	B) 425
C) 525	D) 625

Answer & Explanation Answer: D) 625

Explanation:

The relationship is $x^{y} : {(x + 1)}^{(y + 1)}$

Now , $64 = 4^{3}$

So, required number = ${(4 + 1)}^{(3 + 1)}$ = $5^{4}$ = 625

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Filed Under: Analogy
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129 17804

Q:

In the following question, select the missing number from the given series.

107, 104, 100, 95, ?, 82

A) 87	B) 89
C) 85	D) 83

Answer & Explanation Answer: B) 89

Explanation:

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Filed Under: Number Series
Exam Prep: Bank Exams

2 17788

Q:

'P' walked 1 km towards south direction and turned $90^{o}$ ACW and walked 2 km. Then he turned his left and walked 1 km and then he turned his right and walked 2 km. After that he turned $90^{o}$ ACW and walked 3 km. How far is he from the starting point ?

A) 5 km	B) 4 km
C) 2 km	D) 0 km

Answer & Explanation Answer: A) 5 km

Explanation:

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Filed Under: Direction Sense Test
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85 17775

Q:

Select the option that represents the number of parallelograms in the given figure.

A) 4	B) 2
C) 3	D) 1

Answer & Explanation Answer: A) 4

Explanation:

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Filed Under: Arithmetical Reasoning
Exam Prep: Bank Exams

1 17773

Q:

Thrice the square of a natural number decreased by 4 times the number is equal to 50 more than the number. The number is ?

A) 5	B) 4
C) 7	D) 6

Answer & Explanation Answer: A) 5

Explanation:

Let the number be x. Then,

$3 x^{2}$ - 4x = x + 50

$3 x^{2}$ - 5x - 50 = 0

(3x + 10)(x - 5) = 0

x = 5

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Filed Under: Arithmetical Reasoning
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16 17755

Q:

From the given words, select the word which cannot be formed using the letters of the given word.

TOKENISM

A) NAMES	B) EMITS
C) STONE	D) NOISE

Answer & Explanation Answer: A) NAMES

Explanation:

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

1 17754

Q:

How is B related to A ?

I. A is B's sister.

II. is the father of A and B.

A) If the data in statement I alone are sufficient to answer the question	B) If the data in statement II alone are sufficient answer the question
C) If the data either in I or II alone are sufficient to answer the question;	D) If the data even in both the statements together are not sufficient to answer the question

Answer & Explanation Answer: D) If the data even in both the statements together are not sufficient to answer the question

Explanation:

From statements I and II together, we can conclude only that either B is the sister or brother of A.

So, even from both the statements, the exact relation cannot be known.

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Filed Under: Data Sufficiency

8 17750

Q:

In the following question, select the missing number from the given series.

13, 16, 20, 23, 27, ?

A) 30	B) 29
C) 31	D) 33

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