If the average of first 5 multiples of 6 is x, what is x? MCQ with Answer and Explanation

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If the average of first 5 multiples of 6 is x, what is x?

A. 21

B. 15

C. 24

D. 18

Answer: Option D

Solution (By JKSSB Mock Tests)

6,12,18,24,30. Sum=90. Average=18.

This question belongs to: Maths Average

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Question #1

Find the average of the first 10 multiples of 2.

A. 12

B. 11

C. 11.5

D. 10

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Correct Answer: Option B

Explanation:
Multiples: 2,4,6,...,20 sum=110, count=10, avg=11.

This question belongs to: Maths Average

Question #2

Average of 9 numbers 740. If average of 6 is 735, average of remaining 3?

A. 750

B. 748

C. 755

D. 745

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Correct Answer: Option A

Explanation:
Sum9=6660. Sum6=4410. Remaining=2250. Average=750.

This question belongs to: Maths Average

Question #3

Average of 8 numbers 2500. If average of 5 is 2495, average of remaining 3?

A. 2505

B. 2510

C. 2507

D. 2508.33

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Correct Answer: Option D

Explanation:
Sum8=20000. Sum5=12475. Remaining=7525. Average≈2508.33.

This question belongs to: Maths Average

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