The average of first 15 multiples of 4 is MCQ with Answer and Explanation

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The average of first 15 multiples of 4 is

A. 34

B. 32

C. 28

D. 30

Answer: Option B

Solution (By JKSSB Mock Tests)

4*(1+15)/2=32.

This question belongs to: Maths Average

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Question #1

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

A. 1037.5

B. 1036

C. 1040

D. 1035

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Correct Answer: Option A

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

This question belongs to: Maths Average

Question #2

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Average of 8 numbers 1300. If average of 5 is 1295, average of remaining 3?

A. 1310

B. 1307

C. 1308.33

D. 1305

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Correct Answer: Option C

Explanation:
Sum8=10400. Sum5=6475. Remaining=3925. Average≈1308.33.

This question belongs to: Maths Average

Question #3

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The average score of 40 matches is 50. If average of first 20 is 45, average of last 20?

A. 50

B. 55

C. 52

D. 48

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Correct Answer: Option B

Explanation:
Total=2000. First=900. Last=1100. Average=55.

This question belongs to: Maths Average

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