The average of 10 numbers is 18. If one number is 28, what is the average of the remaining 9? MCQ with Answer and Explanation

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The average of 10 numbers is 18. If one number is 28, what is the average of the remaining 9?

A. 17.5

B. 17.0

C. 16.5

D. 16.89

Answer: Option D

Solution (By JKSSB Mock Tests)

Sum=10×18=180. Remaining sum=180-28=152. Avg=152/9=16.89.

This question belongs to: Maths Average

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Question #1

Average of 100 numbers is 50. If 98 is replaced by 52, new average?

A. 48

B. 50

C. 49.46

D. 49

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Correct Answer: Option C

Explanation:
Change -46. Decrease 46/100=0.46. New 49.54 approx.

This question belongs to: Maths Average

Question #2

The average of 6 numbers is 18. If one number is 30, find the average of the remaining 5.

A. 16.8

B. 16

C. 15.6

D. 14.4

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Correct Answer: Option C

Explanation:
Sum=6×18=108. Remaining sum=108-30=78. Avg=78/5=15.6.

This question belongs to: Maths Average

Question #3

Average of 1 to 10 except 5 is

A. 5

B. 4.5

C. 5.5

D. 6

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Correct Answer: Option C

Explanation:
Sum1-10=55. Minus 5=50. /9≈5.56.

This question belongs to: Maths Average

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