Average of 10 observations 25. Later one 35 replaced by 15, new average? MCQ with Answer and Explanation

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Average of 10 observations 25. Later one 35 replaced by 15, new average?

A. 23

B. 25

C. 24

D. 26

Answer: Option C

Solution (By JKSSB Mock Tests)

Change -20, decrease 2, new 23? Wait 25-2=23.

This question belongs to: Maths Average

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Question #1

Average of 35,70,105 is

A. 70

B. 80

C. 60

D. 65

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Correct Answer: Option A

Explanation:
210/3=70.

This question belongs to: Maths Average

Question #2

Average of 12 numbers 370. If average of 8 is 365, average of remaining 4?

A. 380

B. 375

C. 382

D. 378

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Correct Answer: Option A

Explanation:
Sum12=4440. Sum8=2920. Remaining=1520. Average=380.

This question belongs to: Maths Average

Question #3

The average of 9 consecutive integers is 15. What is the largest integer?

A. 18

B. 17

C. 19

D. 20

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Correct Answer: Option C

Explanation:
Middle (5th) is 15. Largest =15 +4 =19.

This question belongs to: Maths Average

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