Verbal Reasoning - Mental Ability Questions

Q:

If x = √8 - √7, y = √6 - √5 and z = √10 - 3, which of the following is true  ?

A) x > y < z B) x < y < z
C) x > y > z D) z < x < y
 
Answer & Explanation Answer: D) z < x < y

Explanation:

x = √8 - √7 = 1/(√8 + √7) and y = √6 - √5 = 1/(√6 + √5) and z = √10 - 3 = 1/(√10 + 3)

As (√8 + √7) > (√6 + √5), (√8 - √7) < (√6 - √5)

As (√10 + 3) > (√8 + √7) > (√6 + √5)

z < x < y.

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Filed Under: Arithmetical Reasoning
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Q:

What is the time required to punch 1500 cards of 45 column each at the rate of 9,000 punches per hour ?

A) 8 hrs B) 7 hrs 15 min
C) 7 hrs 30 min D) 8 hrs 20 min
 
Answer & Explanation Answer: C) 7 hrs 30 min

Explanation:

Total number of cards = 1500
total columns = 45
so, total punches=1500 x 45 = 67500
for 1 hour if we make 9000 punches,
we require 67500/9000 = 7.5
so 7hours:30mins.

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Q:

If the first and third letters in the word 'ANNIHILATION' are interchanged , also the second and fourth, the fifth and seventh and so on, then which of the following letter would be the 6th from the left?

A) I B) L
C) A D) H
 
Answer & Explanation Answer: C) A

Explanation:

A N N I H I L A T I O N  => N I A N L A H I O N T I

 

After changes,  A is 6th from left.

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Filed Under: Alphabet Test

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Q:

I, J , K and L are all distinct individual. I is the daughter of J. J is the son of K and 'K' is the father of L. If B is the son of J and B has one brother, 'D'. Then which of the following statements is/ are true ?

I. I is the sister of D.

II. D and B are brother.

III. K is the grand father of D.

A) Only I B) I & II
C) Only III D) All of these
 
Answer & Explanation Answer: D) All of these

Explanation:

   K

   |

   J -- L

   |

   I -- D -- B

Here I is female

J, K, L & D , B are males

Then from the above conditions,

All of the given statements are true.

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Filed Under: Blood Relations
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Q:

Which letter in the word SELFRIGHTEOUSNESS' does not change its position when the letters are reversed ? 

A) G B) T
C) E D) H
 
Answer & Explanation Answer: B) T

Explanation:

Clearly, when the letters of a Word are written in reverse order, the position of the middle letter remains unchanged.

Thus, in the word SELFRIGHTEOUSNESS, the middle letter it T does not change its position when the letters are reversed.

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Q:

RB75E%M3W48Q9#B2A$MS

 

In the above sequence which term is third to the right of the twelfth term from the left end?

A) # B) B
C) A D) 2
 
Answer & Explanation Answer: B) B

Explanation:
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Q:

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

6, 9 , 15, 24, 39, 63, ?

A) 97 B) 102
C) 115 D) 127
 
Answer & Explanation Answer: B) 102

Explanation:
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Filed Under: Number Series
Exam Prep: AIEEE , Bank Exams , CAT

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Q:

In a certain code language, "TOAST" is written as "03210" and "RIGID" is written as "45759". How is "DOOR" written in that code language?

A) 9331 B) 9334
C) 3390 D) 1314
 
Answer & Explanation Answer: B) 9334

Explanation:
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Filed Under: Coding and Decoding
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