The average of 18,36,54 is MCQ with Answer and Explanation

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The average of 18,36,54 is

A. 32

B. 36

C. 40

D. 30

Answer: Option B

Solution (By JKSSB Mock Tests)

108/3=36.

This question belongs to: Maths Average

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Question #1

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The average of 10 numbers is increased by 2 when one number 15 is replaced by another. What is the new number?

A. 40

B. 25

C. 35

D. 30

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Correct Answer: Option C

Explanation:
Increase in sum =10×2=20. New number =15+20=35.

This question belongs to: Maths Average

Question #2

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Average of 10 numbers 1630. If average of 6 is 1625, average of remaining 4?

A. 1640

B. 1636

C. 1637.5

D. 1635

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Correct Answer: Option C

Explanation:
Sum10=16300. Sum6=9750. Remaining=6550. Average=1637.5.

This question belongs to: Maths Average

Question #3

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Average of 12 numbers 2370. If average of 8 is 2365, average of remaining 4?

A. 2382

B. 2375

C. 2380

D. 2378

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Correct Answer: Option C

Explanation:
Sum12=28440. Sum8=18920. Remaining=9520. Average=2380.

This question belongs to: Maths Average

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