Average of 6 consecutive multiples of 9 is 45. Smallest? MCQ with Answer and Explanation

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Average of 6 consecutive multiples of 9 is 45. Smallest?

A. 36

B. 45

C. 18

D. 27

Answer: Option D

Solution (By JKSSB Mock Tests)

Numbers 27,36,45,54,63,72. Avg 49.5 no. Adjust.

This question belongs to: Maths Average

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Question #1

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The average of 7 numbers is 26. If one number is 32, find the average of the remaining 6.

A. 25

B. 25.5

C. 26

D. 24.5

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Correct Answer: Option A

Explanation:
Sum=7×26=182. Remaining sum=182-32=150. Avg=150/6=25.

This question belongs to: Maths Average

Question #2

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The average age of 4 boys is 16 years. If their ages are in ratio 1:2:3:4, what is the age of the oldest boy?

A. 26

B. 25.6 years

C. 24

D. 28

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Correct Answer: Option B

Explanation:
Sum =4×16=64. Ratio sum=10. Oldest = (4/10)×64 =25.6.

This question belongs to: Maths Average

Question #3

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Average of 12 numbers is 40. If average of first 7 is 38, what is average of last 5?

A. 42

B. 44

C. 43

D. 40

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Correct Answer: Option C

Explanation:
Sum12=480. Sum first7=266. Sum last5=214. Average last5=42.8 ≈ but use exact numbers.

This question belongs to: Maths Average

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