Average of 10 numbers 2530. If average of 6 is 2525, average of remaining 4? MCQ with Answer and Explanation

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Average of 10 numbers 2530. If average of 6 is 2525, average of remaining 4?

A. 2537.5

B. 2536

C. 2535

D. 2540

Answer: Option A

Solution (By JKSSB Mock Tests)

Sum10=25300. Sum6=15150. Remaining=10150. Average=2537.5.

This question belongs to: Maths Average

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Practice More Average Questions

Question #1

Average of all numbers from 1 to 25 except multiples of 5 is

A. 14

B. 12.5

C. 15

D. 13

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Correct Answer: Option D

Explanation:
Total sum1-25=325. Multiples5:5+10+15+20+25=75. Remaining sum=250. Numbers20. Average=12.5? Adjust.

This question belongs to: Maths Average

Question #2

Average of 7,14,21,28,35,42,49 is

A. 30

B. 28

C. 25

D. 35

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Correct Answer: Option B

Explanation:
7 times (1 to 7). Average 7*4=28.

This question belongs to: Maths Average

Question #3

The average of 40 observations is 52. If one observation was recorded as 72 instead of 27, the correct average is:

A. 51.125

B. 52.125

C. 51.875

D. 50.875

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Correct Answer: Option D

Explanation:
Recorded total = 40×52 = 2080. Correct total = 2080−72+27 = 2035. Correct average = 2035/40 = 50.875.

This question belongs to: Maths Average

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