3100+ Mental Ability Reasoning Questions and Answers with Explanation

Q:

If in a certain language CHARCOAL is coded as 45164913 and MORALE is coded as 296137, how are the following words coded in that language ? REAL

A) 8519	B) 6713
C) 6513	D) 6719

Answer & Explanation Answer: B) 6713

Explanation:

The alphabets are coded as follows :

$C H A R O L M E 4 5 1 6 9 3 2 7$

R is coded as 6,

E as 7,
A as 1 and
L as 3.
So, the code for REAL is 6713

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Filed Under: Coding and Decoding

48 13023

Q:

If Q means 'add to', J means 'multiply by', T means 'substract from' and K means 'divide by' then 30 K 2 Q 3 J 6 T 5 = ?

A) 18	B) 28
C) 31	D) 103

Answer & Explanation Answer: B) 28

Explanation:

Using Correct Symbols , We have :

Given expression = 30 / 2 + 3 x 6 - 5 = 15 + 18 - 5 = 28

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Filed Under: Mathematical Operations

107 13010

Q:

A is the son of B, C. B's sister has a son D and a daughter E. F is the maternal uncle of D. How is A related to D ?

A) Cousin	B) Uncle
C) Nephew	D) Brother

Answer & Explanation Answer: A) Cousin

Explanation:

A is the son of B and D is the son of the sister of B. So, A is the cousin of D.

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Filed Under: Blood Relations

27 12978

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 12968

Q:

Find the Value of ?

${(5.11)}^{2.2} + {(5.55)}^{3.3} + {(6.3)}^{1.4} + {(7.2)}^{2.001} = ? x 3.34$

A) 81	B) 77
C) 73	D) 89

Answer & Explanation Answer: D) 89

Explanation:

This can be done in a method called Approximation.

Now,

$5^{2} + 6^{3} + 6 + 7^{2} = ? x 3.34 25 + 216 + 6 + 49 = ? x 3.34 296 = ? x 3.34 ? = \frac{296}{3.34} = 88.622 ≅ 89$

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

25 12967

Q:

A bird lover was asked how many birds he had in the basket. He replied that there were all parrots but six, all pigeons but six, and all koel but six. How many birds he had in the basket in all ?

A) 8	B) 18
C) 9	D) 10

Answer & Explanation Answer: C) 9

Explanation:

There were all parrots but six means that six birds were not parrots but only pigeons and koels.

Similarly, number of parrots + number of koels = 6 and number of parrots + number of pigeons = 6.

This is possible when there are 3 parrots, 3 pigeons and 3 koels i.e. 9 birds in all.

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Filed Under: Arithmetical Reasoning
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Bank Clerk

17 12956

Q:

Derepak is brother of Ravi. Rekha is sister of Atul. Ravi is son of Rekha. How is Deepak related to Rekha ?

A) Son	B) Brother
C) Nephew	D) Father

Answer & Explanation Answer: A) Son

Explanation:

Deepak is the son of Ravi, who is the son of Rekha.

Thus, Deepak is the son of Rekha

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Filed Under: Blood Relations

21 12956

Q:

Sundar runs 20 m towards East and turns to right and runs 10 m. Then he turns to the right and runs 9 m. Again he turns to right and runs 5 m. After this he turns to left and runs 12 m and finally he turns to right and 6 m. Now to which direction is Sundar facing?

A) East	B) West
C) North	D) South

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