If average of 6 numbers is 30 and average of 3 is 25, average of remaining 3? MCQ with Answer and Explanation

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If average of 6 numbers is 30 and average of 3 is 25, average of remaining 3?

A. 30

B. 32

C. 35

D. 36

Answer: Option C

Solution (By JKSSB Mock Tests)

Sum6=180. Sum3=75. Remaining=105. Average=35.

This question belongs to: Maths Average

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Question #1

Find the average of first 10 natural numbers.

A. 5

B. 5.5

C. 6

D. 6.5

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Correct Answer: Option B

Explanation:
Sum of first 10 natural numbers = 10×11/2 = 55. Average = 55/10 = 5.5.

This question belongs to: Maths Average

Question #2

Average of 21,35,49 is

A. 30

B. 40

C. 32

D. 35

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Correct Answer: Option D

Explanation:
Sum=105. Average=35.

This question belongs to: Maths Average

Question #3

Average of 10 numbers 1130. If average of 6 is 1125, average of remaining 4?

A. 1140

B. 1136

C. 1135

D. 1137.5

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Correct Answer: Option D

Explanation:
Sum10=11300. Sum6=6750. Remaining=4550. Average=1137.5.

This question belongs to: Maths Average

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