3100+ Mental Ability Reasoning Questions and Answers with Explanation

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
Exam Prep: GATE , CAT , Bank Exams , AIEEE
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78 33458

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 33399

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 33396

Q:

In which year was Rahul born ?

I. Rahul at present is 25 years younger to his mother.

II. Rahul's brother, who was born in 1964, is 35 years younger to his mother.

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 in both the statements together are needed.

Answer & Explanation Answer: D) If the data in both the statements together are needed.

Explanation:

From both the given statements, we find that Rahul is (35 - 25) = 10 years older than his brother,

who was born in 1964, So. Rahul was horn in 1954

Thus, both the given statements are needed to answer the query.

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Filed Under: Data Sufficiency

27 33355

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 33253

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 33247

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
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8 33217

Q:

Arrange the following words as per order in the dictionary

1. Eyelid

2. Eyeless

3. Eyesore

4. Eyesight

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

Verbal Reasoning - Mental Ability Questions

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