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Numbers Aptitude Multiple Choice Questions and Answers for Placement

1

Find the maximum value of n such that 157! is perfectly divisible by 12.

A. 77
B. 76
C. 75
D. 78
See Answer & Explanation Lets Discuss
Correct answer is : C
Explanation

12 can be written as 3x2x2.

To Find the value of n ,  we need to find the number of 3's in 157! as 3 is the highest prime factor

Using the formula:

157/3 + 157/(32) + 157/(33) + 157/(34)

=157/3 + 157/9 + 157/27 + 157/81

=52+17+5+1=75.

 
2 Find the maximum value of n such that 50! is perfectly divisible by 2520n.
A. 6
B. 8
C. 7
D. None of these
See Answer & Explanation Lets Discuss
Correct answer is : B
Explanation

2520= 7 x 5 x 2x2x2 x 3x3 .

Here,

7 is the highest prime. So counting the number of 7's in 50! we get:

50/7 + 50/49 

=7 + 1

=8.

 

 

 
 

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Numbers Aptitude Multiple Choice Questions and Answers with Explanation

Numbers Aptitude Multiple Choice Questions and Answers for Government Sector job preparation. Numbers Aptitude MCQ are very important for exams like CAT,MAT,XAT, SSC IBPS, Bank PO, BPSC, UPSC, Govt Jobs, Bank Clerk , UPPSC etc.

How should we start preparing for Numbers Aptitude?

To prepare for Numbers Aptitude you should start practising Numbers MCQ from Questions Banks and Aptitude Books.

How important is Numbers Aptitude Multiple Choice Questions in Exams?

The Numbers Aptitude Multiple Choice Questions paper is very important as almost all the exams ask gk questions. Numbers Aptitude questions are even asked in interview round.

Where can I practice Numbers Aptitude MCQ and Multiple Choice Questions?

Here at placementyogi.com we have a good collection of GK Objective Type Questions that can help you to practise Objective Questions on Numbers Aptitude. Many of these Objective questions will get repeated in government sector exams and will help you in preparing for the Numbers Aptitude paper.