Find the average of first 10 natural numbers. MCQ with Answer and Explanation

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Find the average of first 10 natural numbers.

A. 6

B. 6.5

C. 5.5

D. 5

Answer: Option C

Solution (By JKSSB Mock Tests)

Sum of first 10 natural numbers = 10×11/2 = 55. Average = 55/10 = 5.5.

This question belongs to: Maths Average

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Question #1

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A shopkeeper sold 12 pens at Rs. 15 each. Average selling price of all pens if he sold 8 more at Rs. 12 each?

A. 14

B. 13.8

C. 13

D. 13.5

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Correct Answer: Option B

Explanation:
Total revenue = 12×15 + 8×12 = 180 + 96 = 276. Total pens=20. Average=276/20=13.8.

This question belongs to: Maths Average

Question #2

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Average of 10 numbers 1730. If average of 6 is 1725, average of remaining 4?

A. 1740

B. 1735

C. 1736

D. 1737.5

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Correct Answer: Option D

Explanation:
Sum10=17300. Sum6=10350. Remaining=6950. Average=1737.5.

This question belongs to: Maths Average

Question #3

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The average of 3 numbers is 22. If the numbers are in the ratio 2:3:6, find the largest.

A. 42

B. 24

C. 30

D. 36

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Correct Answer: Option D

Explanation:
Sum=3×22=66. Ratio sum=2+3+6=11. Largest = (6/11)×66=36.

This question belongs to: Maths Average

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