The average of 10 numbers is 22. If each number is decreased by 2, what is the new average? MCQ with Answer and Explanation

The average of 10 numbers is 22. If each number is decreased by 2, what is the new average?

A. 20

B. 24

C. 22

D. 18

Answer: Option A

New average =22-2=20.

This question belongs to: Maths Average

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Question #1 Report Error

Find the average of the first 7 natural numbers which are multiples of 2.

A. 8.5

B. 9

C. 8

D. 7

Correct Answer: Option C

Explanation:
Multiples: 2,4,6,8,10,12,14 sum=56, count=7, avg=8.

This question belongs to: Maths Average

Question #2 Report Error

Average of 9 numbers 640. If average of 6 is 635, average of remaining 3?

A. 650

B. 648

C. 655

D. 645

Correct Answer: Option A

Explanation:
Sum9=5760. Sum6=3810. Remaining=1950. Average=650.

This question belongs to: Maths Average

Question #3 Report Error

Average of 7 numbers 40. If average of 3 is 35, average of remaining 4?

A. 40

B. 43.75

C. 45

D. 42

Correct Answer: Option B

Explanation:
Sum7=280. Sum3=105. Remaining=175. Average=43.75.

This question belongs to: Maths Average