What is the average of the first 5 composite numbers? MCQ with Answer and Explanation

What is the average of the first 5 composite numbers?

A. 7.2

B. 8.0

C. 7.4

D. 7.6

Answer: Option C

First 5 composites: 4,6,8,9,10 sum=37, avg=37/5=7.4.

This question belongs to: Maths Average

No comments yet. Be the first to start the discussion!

Question #1 Report Error

Average of 12 numbers 2720. If average of 8 is 2715, average of remaining 4?

A. 2730

B. 2725

C. 2732

D. 2728

Correct Answer: Option A

Explanation:
Sum12=32640. Sum8=21720. Remaining=10920. Average=2730.

This question belongs to: Maths Average

Question #2 Report Error

If average of 9 numbers is 30 and average of 6 is 28, average of remaining 3?

A. 33

B. 35

C. 32

D. 34

Correct Answer: Option D

Explanation:
Sum9=270. Sum6=168. Remaining=102. Average=34.

This question belongs to: Maths Average

Question #3 Report Error

If average of 10 numbers is 50. If one number is 80, what is average of remaining 9?

A. 48

B. 45

C. 49

D. 47

Correct Answer: Option A

Explanation:
Sum10=500. Remaining=420. Average=46.67? Adjust.

This question belongs to: Maths Average