Average of 9 numbers 1290. If average of 6 is 1285, average of remaining 3? MCQ with Answer and Explanation

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

A. 1300

B. 1295

C. 1298

D. 1305

Answer: Option A

Solution (By JKSSB Mock Tests)

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

This question belongs to: Maths Average

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Question #1

The average of 18, 24, 30, 36, 42 is

A. 30

B. 32

C. 31

D. 28

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Correct Answer: Option A

Explanation:
Sum=150. Average=30.

This question belongs to: Maths Average

Question #2

The average of 5 consecutive even numbers is 28. Smallest number?

A. 24

B. 26

C. 22

D. 20

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Correct Answer: Option A

Explanation:
Average middle=28. Smallest =28-4=24.

This question belongs to: Maths Average

Question #3

The average of 6 numbers is 18. If one number is 12, find the average of the remaining 5.

A. 18.6

B. 19

C. 18.4

D. 19.2

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Correct Answer: Option D

Explanation:
Sum=6×18=108. Remaining sum=108-12=96. Avg=96/5=19.2.

This question belongs to: Maths Average

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