What is the average of the squares of first 5 natural numbers? MCQ with Answer and Explanation

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What is the average of the squares of first 5 natural numbers?

A. 11

B. 12

C. 10

D. 9

Answer: Option A

Solution (By JKSSB Mock Tests)

Squares: 1,4,9,16,25 sum=55, average=55/5=11.

This question belongs to: Maths Average

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Question #1

Average of 1005,1340,1675 is

A. 1340

B. 1335

C. 1350

D. 1330

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Correct Answer: Option A

Explanation:
4020/3=1340.

This question belongs to: Maths Average

Question #2

Average of first 12 natural numbers is

A. 6

B. 5.5

C. 6.5

D. 7

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Correct Answer: Option C

Explanation:
13/2=6.5.

This question belongs to: Maths Average

Question #3

If average of 4 numbers is x and average of 6 other is y, average of all 10 is

A. (x + y)/2

B. x + y

C. (4x + 6y)/10

D. (2x + 3y)/5

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Correct Answer: Option C

Explanation:
Total = 4x + 6y. Average = (4x + 6y)/10.

This question belongs to: Maths Average

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