Average of numbers divisible by 3 between 20 and 50. MCQ with Answer and Explanation

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Average of numbers divisible by 3 between 20 and 50.

A. 35

B. 33

C. 36

D. 37

Answer: Option C

Solution (By JKSSB Mock Tests)

21,24,...,48. 10 terms. Average=(21+48)/2=34.5? Adjust.

This question belongs to: Maths Average

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Question #1

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The average of 4 numbers is 18. If each number is decreased by 6, what is the new average?

A. 12

B. 18

C. 24

D. 6

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Correct Answer: Option A

Explanation:
New average =18-6=12.

This question belongs to: Maths Average

Question #2

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The average of 9 consecutive numbers is 27. Largest number?

A. 30

B. 33

C. 31

D. 32

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Correct Answer: Option C

Explanation:
Middle 5th=27. Largest=27+4=31.

This question belongs to: Maths Average

Question #3

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Average of 10 numbers 35. If average of 6 is 30, average of remaining 4?

A. 42.5

B. 43

C. 40

D. 45

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Correct Answer: Option A

Explanation:
Sum10=350. Sum6=180. Remaining=170. Average=42.5.

This question belongs to: Maths Average

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