The average of 54,72,90 is MCQ with Answer and Explanation

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The average of 54,72,90 is

A. 70

B. 68

C. 75

D. 72

Answer: Option D

Solution (By JKSSB Mock Tests)

216/3=72.

This question belongs to: Maths Average

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Question #1

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Average of 3 numbers is 25. If two average 20, third is

A. 25

B. 35

C. 40

D. 30

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Correct Answer: Option B

Explanation:
Third =75 -40=35.

This question belongs to: Maths Average

Question #2

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The average of 5 numbers is 24. If two numbers 18 and 30 are excluded, average of remaining?

A. 26

B. 22

C. 24

D. 25

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Correct Answer: Option C

Explanation:
Sum5=120. Remaining sum=120-48=72. Average=72/3=24.

This question belongs to: Maths Average

Question #3

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Average of 8 numbers is 50. If average of 5 is 45, average of other 3?

A. 55

B. 58.33

C. 60

D. 50

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Correct Answer: Option B

Explanation:
Sum8=400. Sum5=225. Remaining=175. Average≈58.33.

This question belongs to: Maths Average

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