The average of 1290,1720,2150 is MCQ with Answer and Explanation

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The average of 1290,1720,2150 is

A. 1715

B. 1710

C. 1720

D. 1730

Answer: Option C

Solution (By JKSSB Mock Tests)

5160/3=1720.

This question belongs to: Maths Average

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Question #1

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What is the average of the first 7 multiples of 5?

A. 25

B. 20

C. 15

D. 30

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Correct Answer: Option B

Explanation:
Multiples: 5,10,15,20,25,30,35 sum=140, count=7, avg=20.

This question belongs to: Maths Average

Question #2

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Average of 15 numbers 2510. If average of 9 is 2505, average of remaining 6?

A. 2515

B. 2520

C. 2518

D. 2517.5

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Correct Answer: Option D

Explanation:
Sum15=37650. Sum9=22545. Remaining=15105. Average=2517.5.

This question belongs to: Maths Average

Question #3

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If average of 7 numbers is 24 and average of 4 is 22, average of remaining 3?

A. 27

B. 28

C. 26

D. 25

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Correct Answer: Option A

Explanation:
Sum7=168. Sum4=88. Remaining=80. Average≈26.67 approx 27.

This question belongs to: Maths Average

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