Average of 30,60,90,120 is MCQ with Answer and Explanation

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Average of 30,60,90,120 is

A. 80

B. 85

C. 70

D. 75

Answer: Option D

Solution (By JKSSB Mock Tests)

300/4=75.

This question belongs to: Maths Average

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Question #1

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Average of 15 numbers 28. If one number 40 is replaced by 25, new average?

A. 28

B. 26.67

C. 27.5

D. 27

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Correct Answer: Option D

Explanation:
Change -15, decrease 1. New=27.

This question belongs to: Maths Average

Question #2

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Average of all three digit numbers is

A. 549.5

B. 600

C. 550

D. 500

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Correct Answer: Option A

Explanation:
(100+999)/2=549.5.

This question belongs to: Maths Average

Question #3

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The average of 8 numbers is 31. If each number is increased by 3, what is the new average?

A. 28

B. 34

C. 31

D. 37

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Correct Answer: Option B

Explanation:
New average =31+3=34.

This question belongs to: Maths Average

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