The average of first 15 multiples of 3 is MCQ with Answer and Explanation

The average of first 15 multiples of 3 is

A. 27

B. 24

C. 25

D. 22.5

Answer: Option B

3*(1+15)/2 =3*8=24.

This question belongs to: Maths Average

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Question #1 Report Error

Average of 10 numbers 2630. If average of 6 is 2625, average of remaining 4?

A. 2635

B. 2640

C. 2637.5

D. 2636

Correct Answer: Option C

Explanation:
Sum10=26300. Sum6=15750. Remaining=10550. Average=2637.5.

This question belongs to: Maths Average

Question #2 Report Error

Average of 8 numbers 1300. If average of 5 is 1295, average of remaining 3?

A. 1308.33

B. 1305

C. 1307

D. 1310

Correct Answer: Option A

Explanation:
Sum8=10400. Sum5=6475. Remaining=3925. Average≈1308.33.

This question belongs to: Maths Average

Question #3 Report Error

Average of 8 numbers 2300. If average of 5 is 2295, average of remaining 3?

A. 2310

B. 2307

C. 2305

D. 2308.33

Correct Answer: Option D

Explanation:
Sum8=18400. Sum5=11475. Remaining=6925. Average≈2308.33.

This question belongs to: Maths Average