Average of first 6 multiples of 11 is MCQ with Answer and Explanation

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Average of first 6 multiples of 11 is

A. 33

B. 38.5

C. 40

D. 36.5

Answer: Option B

Solution (By JKExamLibrary)

11*(1+6)/2=38.5.

This question belongs to: Maths Average

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Question #1

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The average of 24,36,48 is

A. 35

B. 36

C. 38

D. 30

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Correct Answer: Option B

Explanation:
Sum=108. Average=36.

This question belongs to: Maths Average

Question #2

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Average of 15 numbers 1860. If average of 9 is 1855, average of remaining 6?

A. 1865

B. 1868

C. 1870

D. 1867.5

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Correct Answer: Option D

Explanation:
Sum15=27900. Sum9=16695. Remaining=11205. Average=1867.5.

This question belongs to: Maths Average

Question #3

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Average speed to cover a distance in two equal parts at speeds x and y is

A. xy/(x+y)

B. (x+y)/2

C. 2xy/(x+y)

D. x+y

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Correct Answer: Option C

Explanation:
Harmonic mean for equal distances.

This question belongs to: Maths Average

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