Average of 4,8,12,16,20,24 is MCQ with Answer and Explanation

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Average of 4,8,12,16,20,24 is

A. 16

B. 14

C. 15

D. 13

Answer: Option B

Solution (By JKSSB Mock Tests)

Sum=84. Average=14.

This question belongs to: Maths Average

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Question #1

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The average marks of boys in a class is 60 and that of girls is 70. If there are 20 boys and 30 girls, the average marks of the whole class is:

A. 64

B. 66

C. 68

D. 65

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Correct Answer: Option B

Explanation:
Combined average = (20×60 + 30×70)/50 = 3300/50 = 66.

This question belongs to: Maths Average

Question #2

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Average of 8 numbers 85. If average of 5 is 80, average of remaining 3?

A. 95

B. 92

C. 93.33

D. 90

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Correct Answer: Option C

Explanation:
Sum8=680. Sum5=400. Remaining=280. Average≈93.33.

This question belongs to: Maths Average

Question #3

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Average of 15 numbers 150. If average of 9 is 145, average of remaining 6?

A. 155

B. 160

C. 158

D. 157.5

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Correct Answer: Option D

Explanation:
Sum15=2250. Sum9=1305. Remaining=945. Average=157.5.

This question belongs to: Maths Average

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