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Numbers Aptitude Objective Questions and Answers for Placement

6 In a group of buffaloes and ducks, the number of legs are 24 more than twice the number of heads. What is the number of buffaloes in the group?
A. 10
B. 12
C. 6
D. 8
See Answer & Explanation Lets Discuss
Correct answer is : B
Explanation

 

Let the number of buffaloes be x and the number of ducks be y

Then,

4x + 2y = 2 (x + y) + 24

=> 4x + 2y = 2x + 2y + 24

=> 4x + 2y -2x-2y = 24

=> 2x = 24

=>x=12.

 

 

 
7

How many of the following numbers are divisible by 3 but not by 9?
2133, 2343, 3474, 4131, 5286, 5340, 6336, 7347, 8115, 9276

A. 5
B. 6
C. 7
D. None of these
See Answer & Explanation Lets Discuss
Correct answer is : B
Explanation

Taking the sum of the digits, we have :

S1 = 9, S2 = 12, S3 = 18, S4 = 9, S5 = 21, S6 = 12, S7 = 18, S8 = 21, S9 = 15, S10 = 24.

Clearly, S2, S3, S6, S8, S9, S10 are all divisible by 3 but not by 9. 

So, the number of required numbers = 6.

 
 
8

A grocer has a sale of Rs. 6435, Rs. 6927, Rs. 6855, Rs. 7230 and Rs. 6562 for 5 consecutive months. How much sale must he have in the sixth month so that he gets an average sale of Rs. 6500?

A.

4800

B.

4991

C.

5004

D.

5000

See Answer & Explanation Lets Discuss
Correct answer is : B
Explanation

Let the sale in the sixth month =x

Then, (6435+6927+6855+7230+6562+x)/6=6500.

=> 6435+6927+6855+7230+6562+x=6×6500.

=> 34009+x=39000.

=> x=39000−34009=4991.

 

 
9

The average of 20 numbers is zero. Of them, How many of them may be greater than zero, at the most?

A.

1

B.

20

C.

0

D.

19

See Answer & Explanation Lets Discuss
Correct answer is : D
Explanation

Average of 20 numbers = 0

=> Sum of 20 numbers/20=0

=> Sum of 20 numbers = 0

Hence at the most, there can be 19 positive numbers. 

(Such that if the sum of these 19 positive numbers is x, 20th number will be -x).

 
10

The captain of a cricket team of 11 members is 26 years old and the wicket keeper is 3 years older. If the ages of these two are excluded, the average age of the remaining players is one year less than the average age of the whole team. Find out the average age of the team.

A.

23 years

B.

20 years

C.

21 years

D.

24 years

See Answer & Explanation Lets Discuss
Correct answer is : A
Explanation

Number of members in the team = 11

Let the average age of of the team = x

=> Sum of ages of all the 11 members of the team / 11 = x.

=> Sum of the ages of all the 11 members of the team = 11x.

Age of the captain = 26

Age of the wicket keeper = 26 + 3 = 29.

Sum of the ages of 9 members of the team excluding captain and wicket keeper 

=11x−26−29 = 11x−55

 

Average age of 9 members of the team excluding captain and wicket keeper

= 11x−55/9.

Given that (11x−55)/9 = (x−1).

=>11x−55=9(x−1).

=>11x−55=9x−9.

=>2x=46.

=>x=46/2.

=>23 years.

 
 

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Numbers Aptitude Objective Questions and Answers with Explanation

Numbers Aptitude Objective Questions and Answers for Government Sector job preparation. Numbers Aptitude Multiple Choice Questions 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 Multiple Choice Questions from Questions Banks and Aptitude Books.

How important is Numbers Aptitude Objective Questions in Exams?

The Numbers Aptitude Objective 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 Multiple Choice Questions and Objective Questions?

Here at placementyogi.com we have a good collection of GK Objective Type Questions that can help you to practise MCQ 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.