3100+ Mental Ability Reasoning Questions and Answers with Explanation

Q:

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

1. Vicinity

2. Victory

3. Vanity

4. Vapour

5. Variety

A) 34512	B) 12345
C) 54231	D) 42315

Answer & Explanation Answer: A) 34512

Explanation:

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

2 17626

Q:

From the word 'ASTOUNDER', how many independent words can be made with-out changing the order of the letters and using each letter only once ?

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

Answer & Explanation Answer: D) 2

Explanation:

The words formed are

AT and UNDER, AS and UNDER (or) AT and SOUND

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Filed Under: Alphabet Test

124 17621

Q:

Find the missing word for the related pair.

Road : Car :: Sea : ?

A) Fish	B) Ship
C) River	D) Water

Answer & Explanation Answer: C) River

Explanation:

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Filed Under: Analogy
Exam Prep: Bank Exams

2 17487

Q:

Which signs should be interchanged if the equation below needs to be true?

1.5 + 8 x 9 - 16 / 2 = 4

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

Answer & Explanation Answer: B) / and -

Explanation:

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Filed Under: Coding and Decoding
Exam Prep: Bank Exams

1 17452

Q:

The solution of 3(2u + v) = 7 uv and 3(u + 3v) = 11 uv is _____

A) u = 1, v = 0	B) u = 1, v = 3/2
C) u = 0, v = 3/4	D) u = 0, v = 1

Answer & Explanation Answer: B) u = 1, v = 3/2

Explanation:

Using Trial and error method,

From the options u = 1, v = 3/2 satisfies both the equations.

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Filed Under: Mathematical Operations
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

37 17368

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
Exam Prep: GATE , CAT , Bank Exams , AIEEE
Job Role: Bank PO , Bank Clerk

16 17366

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
Exam Prep: AIEEE , Bank Exams , CAT , GATE , GRE
Job Role: Bank Clerk , Bank PO

129 17340

Q:

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

8 + 2 - 40 ÷ 5 x 16 = 44

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

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