3100+ Mental Ability Reasoning Questions and Answers with Explanation

Q:

What is the value of P in the following Equation ?

$19^{2.5} \times 19^{p} = 19^{7}$

A) 3.9	B) 4.1
C) 3.7	D) 4.5

Answer & Explanation Answer: D) 4.5

Explanation:

Given equation is

$19^{2.5} \times 19^{p} = 19^{7}$

Here it is in the form of $a^{m} \times a^{n} = a^{m + n}$

Here m = 2.5 , n = p, m+n = 7

=> 2.5 + p = 7

=> p = 7 - 2.5

=> p = 4.5

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

25 19823

Q:

The missing number in the given series is:

15 (105) 14 , 13 (?) 12

A) 91	B) 78
C) 65	D) 68

Answer & Explanation Answer: B) 78

Explanation:

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Filed Under: Number Series
Exam Prep: Bank Exams

2 19818

Q:

Arrange the following words as per order in the dictionary.

1. Syringe

2. Syphilis

3. Syncretism

4. Synarchy

5. Submerge

A) 4,5,2,3,1	B) 5,4,3,2,1
C) 5,3,4,1,2	D) 4,1,2,3,5

Answer & Explanation Answer: B) 5,4,3,2,1

Explanation:

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

1 19808

Q:

25 : 37 :: 49 : ?

A) 65	B) 69
C) 79	D) 81

Answer & Explanation Answer: A) 65

Explanation:

Here the given numbers are related in such a manner that,

$5^{2} = 25 {(5 + 1)}^{2} + 1 = 37 Similarly, 7^{2} = 49 {(7 + 1)}^{2} + 1 = 64 + 1 = 65$

Hence, 25 : 37 :: 49 : 65.

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Filed Under: Analogy
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO

52 19776

Q:

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

INFERNAL

A) ALIEN	B) FINAL
C) LEARN	D) URINE

Answer & Explanation Answer: D) URINE

Explanation:

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

0 19758

Q:

Pointing to a photograph, Vipul said, "She is the daughter of my grandfather's only son." How is Vipul related to the girl in the photograph ?

A) Father	B) Brother
C) Cousin	D) Data inadequate

Answer & Explanation Answer: B) Brother

Explanation:

My grandfather's only son — My father. So, the girl is the daughter of Vipul's father i.e., Vipul is the girl's brother.

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Filed Under: Blood Relations

21 19640

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 19631

Q:

Select the related word/letters/numbers from the given alternatives:

BDCE : GIHJ :: QSRT : ?

A) VWXY	B) UWMX
C) VXWY	D) UWNX

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