Average of first 20 multiples of 5 is MCQ with Answer and Explanation

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Average of first 20 multiples of 5 is

A. 55

B. 52.5

C. 50

D. 60

Answer: Option B

Solution (By JKSSB Mock Tests)

5 to 100. Average 5*(1+20)/2 =5*10.5=52.5.

This question belongs to: Maths Average

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Question #1

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Average of 10 numbers 2780. If average of 6 is 2775, average of remaining 4?

A. 2790

B. 2786

C. 2785

D. 2787.5

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Correct Answer: Option D

Explanation:
Sum10=27800. Sum6=16650. Remaining=11150. Average=2787.5.

This question belongs to: Maths Average

Question #2

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The average of 720,960,1200 is

A. 950

B. 960

C. 970

D. 955

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Correct Answer: Option B

Explanation:
2880/3=960.

This question belongs to: Maths Average

Question #3

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The average of 11 numbers is 44. What is the sum of the numbers?

A. 464

B. 504

C. 440

D. 484

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Correct Answer: Option D

Explanation:
Sum =44×11=484.

This question belongs to: Maths Average

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