The average of 5 numbers is 36. If one number is 42, find the average of the remaining 4. MCQ with Answer and Explanation

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The average of 5 numbers is 36. If one number is 42, find the average of the remaining 4.

A. 35

B. 34.5

C. 33.75

D. 34

Answer: Option B

Solution (By JKSSB Mock Tests)

Sum=5×36=180. Remaining sum=180-42=138. Avg=138/4=34.5.

This question belongs to: Maths Average

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Practice More Average Questions

Question #1

What is the average of the first 12 even numbers?

A. 14

B. 13

C. 12.5

D. 13.5

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Correct Answer: Option B

Explanation:
Sum of first 12 even numbers = 12×13 =156 (since sum = n(n+1) for first n evens). Average=156/12=13.

This question belongs to: Maths Average

Question #2

Average of 10 numbers 1180. If average of 6 is 1175, average of remaining 4?

A. 1190

B. 1186

C. 1185

D. 1187.5

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Correct Answer: Option D

Explanation:
Sum10=11800. Sum6=7050. Remaining=4750. Average=1187.5.

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Question #3

The average of 25,50,75 is

A. 45

B. 55

C. 50

D. 60

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Correct Answer: Option C

Explanation:
Sum=150. Average=50.

This question belongs to: Maths Average

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