The average of first 5 even numbers is MCQ with Answer and Explanation

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The average of first 5 even numbers is

A. 5

B. 8

C. 7

D. 6

Answer: Option D

Solution (By JKSSB Mock Tests)

2+4+6+8+10=30. Average=6.

This question belongs to: Maths Average

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Question #1

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Average of 10 numbers 530. If average of 6 is 525, average of remaining 4?

A. 535

B. 537.5

C. 536

D. 540

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Correct Answer: Option B

Explanation:
Sum10=5300. Sum6=3150. Remaining=2150. Average=537.5.

This question belongs to: Maths Average

Question #2

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Average weight of 20 girls 45 kg. If 5 boys average 55 kg included, new average for 25?

A. 47

B. 50

C. 46

D. 48

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Correct Answer: Option A

Explanation:
Girls 900. Boys 275. Total 1175/25=47.

This question belongs to: Maths Average

Question #3

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What is the average of the cubes of first 3 natural numbers?

A. 18

B. 10

C. 12

D. 14

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Correct Answer: Option C

Explanation:
Cubes:1,8,27 sum=36, avg=36/3=12.

This question belongs to: Maths Average

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