The average of 100 numbers is 50. The number 100 was misread as 10. Correct average? MCQ with Answer and Explanation

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The average of 100 numbers is 50. The number 100 was misread as 10. Correct average?

A. 50.9

B. 50

C. 51

D. 49

Answer: Option A

Solution (By JKSSB Mock Tests)

Error -90. Increase 90/100=0.9. New=50.9.

This question belongs to: Maths Average

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Question #1

Average of 15 numbers 2460. If average of 9 is 2455, average of remaining 6?

A. 2470

B. 2465

C. 2467.5

D. 2468

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Correct Answer: Option C

Explanation:
Sum15=36900. Sum9=22095. Remaining=14805. Average=2467.5.

This question belongs to: Maths Average

Question #2

Find the average of all numbers from 1 to 40 that are divisible by 8.

A. 24

B. 22.5

C. 25

D. 23

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Correct Answer: Option A

Explanation:
Numbers:8,16,24,32,40 sum=120, count=5, avg=24.

This question belongs to: Maths Average

Question #3

Average of 615,820,1025 is

A. 830

B. 820

C. 815

D. 810

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Correct Answer: Option B

Explanation:
2460/3=820.

This question belongs to: Maths Average

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