If average of 16 numbers is 42 and average of 12 is 40, average of remaining 4? MCQ with Answer and Explanation

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If average of 16 numbers is 42 and average of 12 is 40, average of remaining 4?

A. 45

B. 48

C. 50

D. 46

Answer: Option B

Solution (By JKSSB Mock Tests)

Sum16=672. Sum12=480. Remaining=192. Average=48.

This question belongs to: Maths Average

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Question #1

Average of 9 numbers 840. If average of 6 is 835, average of remaining 3?

A. 845

B. 848

C. 850

D. 855

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Correct Answer: Option C

Explanation:
Sum9=7560. Sum6=5010. Remaining=2550. Average=850.

This question belongs to: Maths Average

Question #2

Average of 9 numbers 1290. If average of 6 is 1285, average of remaining 3?

A. 1298

B. 1305

C. 1300

D. 1295

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Correct Answer: Option C

Explanation:
Sum9=11610. Sum6=7710. Remaining=3900. Average=1300.

This question belongs to: Maths Average

Question #3

Find the average of the first 5 multiples of 6.

A. 18

B. 16

C. 20

D. 15

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Correct Answer: Option A

Explanation:
Multiples:6,12,18,24,30 sum=90, count=5, avg=18.

This question belongs to: Maths Average

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