Average of multiples of 8 from 8 to 64 is MCQ with Answer and Explanation

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Average of multiples of 8 from 8 to 64 is

A. 40

B. 36

C. 30

D. 32

Answer: Option B

Solution (By JKSSB Mock Tests)

(8+64)/2=36.

This question belongs to: Maths Average

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Question #1

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The average of 80,90,100 is

A. 88

B. 90

C. 85

D. 95

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Correct Answer: Option B

Explanation:
270/3=90.

This question belongs to: Maths Average

Question #2

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The average of 5 consecutive even numbers is 12. What is the smallest number?

A. 10

B. 6

C. 8

D. 12

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Correct Answer: Option C

Explanation:
In consecutive even numbers, average = middle number. So middle (3rd) =12. Smallest =12-4=8.

This question belongs to: Maths Average

Question #3

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Average of 1^3 +2^3 +...+5^3 is

A. 45

B. 225

C. 55

D. 50

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Correct Answer: Option A

Explanation:
Sum cubes =(5*6/2)^2=225. Average=225/5=45.

This question belongs to: Maths Average

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