Average of 18,36,54,72 is MCQ with Answer and Explanation

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Average of 18,36,54,72 is

A. 45

B. 50

C. 40

D. 42

Answer: Option A

Solution (By JKSSB Mock Tests)

180/4=45.

This question belongs to: Maths Average

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Question #1

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The average of 4 numbers is 27. If each number is increased by 4, what is the new average?

A. 23

B. 27

C. 31

D. 35

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Correct Answer: Option C

Explanation:
New average =27+4=31.

This question belongs to: Maths Average

Question #2

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The average of 4 numbers is 21. If the average of first two numbers is 18, what is the average of the last two numbers?

A. 24

B. 22

C. 21.5

D. 23

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Correct Answer: Option A

Explanation:
Sum of all =4×21=84. Sum of first two =2×18=36. Sum of last two =84-36=48. Average of last two =48/2=24.

This question belongs to: Maths Average

Question #3

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The average of 9 consecutive numbers is 27. Largest number?

A. 32

B. 33

C. 30

D. 31

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Correct Answer: Option D

Explanation:
Middle 5th=27. Largest=27+4=31.

This question belongs to: Maths Average

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