3100+ Mental Ability Reasoning Questions and Answers with Explanation

Q:

Which one of the following interchanges in signs and numbers would make the given equation correct?

3 + 5 - 2 = 4

A) + and -, 2 and 5	B) + and -, 3 and 4
C) + and -, 2 and 4	D) + and -, 3 and 5

Answer & Explanation Answer: D) + and -, 3 and 5

Explanation:

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3 17187

Q:

The following equation is incorrect. Which two signs should be interchanged to correct the equation?

40 ÷ 8 x 5 + 15 - 2 = 30

A) ÷ and -	B) + and ÷
C) - and +	D) x and -

Answer & Explanation Answer: D) x and -

Explanation:

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1 17160

Q:

The following equation is incorrect. Which two signs should be interchanged to correct the equation?

24 + 4 - 20 ÷ 9 x 5 = 31

A) - and +	B) ÷ and x
C) x and -	D) + and ÷

Answer & Explanation Answer: D) + and ÷

Explanation:

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1 17158

Q:

Find the next number in the series

404, 415, 402, 413, 400, ?

A) 411	B) 421
C) 417	D) 414

Answer & Explanation Answer: A) 411

Explanation:

The given series 404, 415, 402, 413, 400, ? follows a pattern that,

404

404 + 11 = 415

415 - 13 = 402

402 + 11 = 413

413 - 13 = 400

400 + 11 = 411

Hence the next number in the given number series is 411.

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10 17133

Q:

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

7 : 56 : : 9 : ?

A) 65	B) 90
C) 81	D) 70

Answer & Explanation Answer: B) 90

Explanation:

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Filed Under: Analogy
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1 17113

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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129 17054

Q:

If the mathematical operator, '+' means 'x', '/' means '-', '-' means '+', and 'x' means '/', then the value of 11 +14 x7- 5 / 29 is

A) -5	B) -12
C) -7	D) -2

Answer & Explanation Answer: D) -2

Explanation:

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2 17051

Q:

If 7∆6 = 84, 1∆4 = 8 and 2∆3 = 12, then find the value of 8∆4 = ?

A) 64	B) 36
C) 12	D) 40

Verbal Reasoning - Mental Ability Questions

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