3100+ Mental Ability Reasoning Questions and Answers with Explanation

Q:

What should come in place of the question mark(?) in the following questions ?

$3 \frac{1}{6} + 4 \frac{1}{2} - 2 \frac{2}{3} - 1 \frac{11}{12} = ?$

A) 1 7/12	B) 1 5/12
C) 3 7/12	D) 3 1/12

Answer & Explanation Answer: D) 3 1/12

Explanation:

? = (3 + 4 - 2 - 1) + ( 1/6 + 1/2 - 2/3 - 11/12)

= 4 + [(2+6-8-11)/12]

= 4 - (11/12 )= 31/12.

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Filed Under: Mathematical Operations
Exam Prep: CAT , Bank Exams , AIEEE
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126 33675

Q:

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

19, 26, 40, 61, ?, 124

A) 89	B) 82
C) 65	D) 98

Answer & Explanation Answer: A) 89

Explanation:

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Filed Under: Number Series
Exam Prep: Bank Exams

5 33624

Q:

Find the quadratic equations whose roots are the reciprocals of the roots of $2 x^{2} + 5 x + 3$ ?

A) $3 x^{2} + 5 x + 2 = 0$

B) $5 x^{2} + 3 x + 2 = 0$

C) $3 x^{2} - 5 x - 2 = 0$

D) None

A) A	B) B
C) C	D) D

Answer & Explanation Answer: A) A

Explanation:

The quadratic equation whose roots are reciprocal of $2 x^{2} + 5 x + 3 = 0$ can be obtained by replacing x by 1/x.

Hence, 2(1/x)(1/x)+ 5(1/x) + 3 = 0

=> $3 x^{2} + 5 x + 2 = 0$

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Filed Under: Mathematical Operations
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78 33503

Q:

As per the given Venn diagram, the total number of students who play cricket as well as football but not Kabaddi is ___.

A) R	B) T
C) P	D) V

Answer & Explanation Answer: D) V

Explanation:

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Filed Under: Logical Venn Diagram
Exam Prep: Bank Exams

1 33431

Q:

If 3!5 = 30, 6!1 = 12 and 5!8 = 80, then find the value of 2!2 = ?

A) 28	B) 12
C) 8	D) 32

Answer & Explanation Answer: C) 8

Explanation:

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Filed Under: Coding and Decoding
Exam Prep: Bank Exams

2 33392

Q:

Complete the number series?

11, 12.2, 14.6, 18.2, ?

A) 21.8	B) 23
C) 24.6	D) 25

Answer & Explanation Answer: B) 23

Explanation:

The given number series 11, 12.2, 14.6, 18.2, ?

11

11 + 1.2 = 12.2

12.2 + 2.4 = 14.6

14.6 + 3.6 = 18.2

18.2 + 4.8 = 23

Hence, the next number in the given number series is 23.

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Filed Under: Number Series
Exam Prep: AIEEE , Bank Exams , CAT , GATE
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8 33328

Q:

In the following question, select the related letter/letters from the given alternatives.

BCE : IJL : : CDF : ?

A) KLN	B) JKM
C) JLN	D) KMN

Answer & Explanation Answer: B) JKM

Explanation:

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Filed Under: Analogy
Exam Prep: Bank Exams

0 33283

Q:

Directions : For the Assertion (A) and Reason (R) below, choose the correct alternative

Assertion (A) : Pressure cookers are fitted with ebonite handles.

Reason (R) : Ebonite is strong.

A) Both A and R are true and R is the correct explanation of A.	B) Both A and R are true but R is NOT the correct explanation of A.
C) A is true but R is false.	D) A is false but R is true.

Answer & Explanation Answer: C) A is true but R is false.

Explanation:

The handles of pressure cookers are made of ebonite because it being a bad conductor of heat, does not heat up.

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Filed Under: Assertion and Reason

61 33282

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