The average of 8 consecutive numbers is 25.5. Smallest number? MCQ with Answer and Explanation

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The average of 8 consecutive numbers is 25.5. Smallest number?

A. 23

B. 22

C. 24

D. 21

Answer: Option B

Solution (By JKSSB Mock Tests)

Average middle 4.5 and 5.5 =25.5. Smallest =25.5 -3.5=22.

This question belongs to: Maths Average

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Question #1

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The average of 6 numbers is 28. If two numbers are 22 and 30, find the average of the remaining four.

A. 28

B. 29.5

C. 28.5

D. 29

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Correct Answer: Option D

Explanation:
Sum=6×28=168. Sum of two=22+30=52. Sum of four=116. Avg=116/4=29.

This question belongs to: Maths Average

Question #2

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The average age of 10 friends is 25. If one 30 years old joins, new average?

A. 25.45

B. 26

C. 24.5

D. 25.5

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Correct Answer: Option A

Explanation:
Total=250. New=280/11≈25.45.

This question belongs to: Maths Average

Question #3

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The average of 4 numbers is 30. If the numbers are in the ratio 1:2:3:4, find the largest number.

A. 60

B. 48

C. 24

D. 36

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Correct Answer: Option B

Explanation:
Sum = 4×30=120. Ratio sum =1+2+3+4=10. Largest = (4/10)×120=48.

This question belongs to: Maths Average

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