Average of 7 numbers 42. If average of 4 is 38, average of remaining 3? MCQ with Answer and Explanation

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Average of 7 numbers 42. If average of 4 is 38, average of remaining 3?

A. 50

B. 48

C. 45

D. 46

Answer: Option B

Solution (By JKSSB Mock Tests)

Sum7=294. Sum4=152. Remaining=142. Average≈47.33 approx 48.

This question belongs to: Maths Average

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Question #1

Average of 8 numbers 1000. If average of 5 is 995, average of remaining 3?

A. 1010

B. 1005

C. 1008.33

D. 1007

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Correct Answer: Option C

Explanation:
Sum8=8000. Sum5=4975. Remaining=3025. Average≈1008.33.

This question belongs to: Maths Average

Question #2

Average of 9 numbers 45. If average of first 5 is 42, average of last 5 is 48, 5th number?

A. 46

B. 42

C. 45

D. 48

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Correct Answer: Option C

Explanation:
Sum9=405. Sum1-5=210. Sum5-9=240. 5th=210+240-405=45.

This question belongs to: Maths Average

Question #3

The average of 588,784 is

A. 670

B. 690

C. 686

D. 680

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Correct Answer: Option C

Explanation:
686.

This question belongs to: Maths Average

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