Verbal Reasoning - Mental Ability Questions

Q:

It takes five minutes to pass a rumour from one person to two other persons. The tree of rumour continues. Find how many minutes does it take spread the rumour to 729 persons ?

A) 45 min B) 25 min
C) 30 min D) 36 min
 
Answer & Explanation Answer: C) 30 min

Explanation:

After 5 mins ..... 3 persons will get rumour
After 10 mins .... 3x2 + 3 = 9 = 32 persons will get
after 15 =5x3 min ......9x2 + 9 =27 = 33 persons will get news.
.
.
after 5x6 mins ... 36 = 729 persons will get news.

 

Therefore, time taken to spread the rumour to 729 persons is 30 minutes.

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Filed Under: Arithmetical Reasoning
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23 21727
Q:

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

Assertion(A)  : Graphite is slippery and used as a lubricant. 

Reason (R)    : Graphite has free electrons. 

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

Explanation:

Graphite possesses a layer structure with two successive layers held by weak forces and able to slide over one another. So, graphite is slippery and this property finds its use as a lubricant. In graphite, each carbon atom is linked to three other carbon atoms while one electron in the carbon atom is delocalised. So, graphite has free electrons 

 

 

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Filed Under: Assertion and Reason

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Q:

What will be next number in the series?

 

0, 1, 4, 27, 16, 125, 36, ?

 

A) 343 B) 144
C) 72 D) 25
 
Answer & Explanation Answer: D) 25

Explanation:
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Filed Under: Number Series
Exam Prep: Bank Exams

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Q:

Choose the word which is least like the others word in a group?

A) Day B) Calendar
C) Date D) Month
 
Answer & Explanation Answer: B) Calendar

Explanation:

All others are parts of a calendar.

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Filed Under: Classification

99 21673
Q:

Select the missing numbers from the given alternatives

8  21  4

27 ?   53

A) 35 B) 40
C) 17 D) 23
 
Answer & Explanation Answer: B) 40

Explanation:
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Filed Under: Number Series
Exam Prep: Bank Exams

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Q:

Square is to Triangle and Cube is to

A) Pyramid B) Rectangle
C) Ice D) Rhombus
 
Answer & Explanation Answer: A) Pyramid

Explanation:

Square is 2-dimensional 4 sided figure Whereas Cube is 3-dimensional figure which looks like Square.

 

Similarly, Triangle is 2-dimensional 3 sided figure Whereas Pyramid is 3-dimensional figure which looks like Triangle.

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Filed Under: Analogy
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14 21656
Q:

Select the related word/letters/number from the given alternatives.

 

RST:QPO:: MNO:: ?

 

A) YZA B) GHI
C) BAC D) LKJ
 
Answer & Explanation Answer: D) LKJ

Explanation:
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Filed Under: Alphabet Test
Exam Prep: Bank Exams

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Q:

Arrange the following words as per order in the dictionary.

1. Preach
2. Praise
3. Precinet
4. Precept
5. Precede

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

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

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