Average of 15,30,45,60,75 is MCQ with Answer and Explanation

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Average of 15,30,45,60,75 is

A. 45

B. 50

C. 42

D. 40

Answer: Option A

Solution (By JKSSB Mock Tests)

225/5=45.

This question belongs to: Maths Average

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Question #1

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The average of first 8 multiples of 5 is

A. 30

B. 22.5

C. 25

D. 20

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Correct Answer: Option B

Explanation:
5*(1+8)/2=22.5.

This question belongs to: Maths Average

Question #2

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If average of 25 students is 50 and average of 15 is 60, average of remaining 10?

A. 45

B. 40

C. 35

D. 30

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Correct Answer: Option C

Explanation:
Sum25=1250. Sum15=900. Remaining sum=350. Average=35.

This question belongs to: Maths Average

Question #3

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Average of 10 numbers 1030. If average of 6 is 1025, average of remaining 4?

A. 1037.5

B. 1035

C. 1040

D. 1036

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Correct Answer: Option A

Explanation:
Sum10=10300. Sum6=6150. Remaining=4150. Average=1037.5.

This question belongs to: Maths Average

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