The average of 12,18,24,30 is MCQ with Answer and Explanation

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The average of 12,18,24,30 is

A. 20

B. 21

C. 22

D. 24

Answer: Option B

Solution (By JKSSB Mock Tests)

Sum=84. Average=21.

This question belongs to: Maths Average

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Question #1

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Average of 8 numbers 1400. If average of 5 is 1395, average of remaining 3?

A. 1408.33

B. 1407

C. 1410

D. 1405

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Correct Answer: Option A

Explanation:
Sum8=11200. Sum5=6975. Remaining=4225. Average≈1408.33.

This question belongs to: Maths Average

Question #2

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The average of 6 numbers is 28. If each is increased by 50%, new average?

A. 40

B. 35

C. 28

D. 42

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Correct Answer: Option D

Explanation:
Increased by 50%, average 28*1.5=42.

This question belongs to: Maths Average

Question #3

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Average of 10 numbers 2430. If average of 6 is 2425, average of remaining 4?

A. 2440

B. 2435

C. 2436

D. 2437.5

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Correct Answer: Option D

Explanation:
Sum10=24300. Sum6=14550. Remaining=9750. Average=2437.5.

This question belongs to: Maths Average

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