Find the mean proportional between 11 and 61. MCQ with Answer and Explanation

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Find the mean proportional between 11 and 61.

A. 50

B. 25

C. 28

D. 72

Answer: Option B

Solution (By JKSSB Mock Tests)

Mean proportional = √(11 × 61) = √(671) = 25.

This question belongs to: Maths Ratio and Proportion

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Practice More Ratio and Proportion Questions

Question #1

If a:b = 8:3 and b:c = 3:4, then a:b:c = ?

A. 7:3:5

B. 8:3:4

C. 16:6:8

D. 8:4:4

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Correct Answer: Option B

Explanation:
Combine ratios: a:b = 8:3, b:c = 3:4 ⇒ a:b:c = 8:3:4.

This question belongs to: Maths Ratio and Proportion

Question #2

If a:b = 5:8 and b:c = 8:7, then a:b:c = ?

A. 10:16:14

B. 5:8:7

C. 5:9:7

D. 4:8:8

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Correct Answer: Option B

Explanation:
Combine ratios: a:b = 5:8, b:c = 8:7 ⇒ a:b:c = 5:8:7.

This question belongs to: Maths Ratio and Proportion

Question #3

If a:b = 4:5 and b:c = 5:8, then a:b:c = ?

A. 8:10:16

B. 4:6:8

C. 4:5:8

D. 3:5:9

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Correct Answer: Option C

Explanation:
Combine ratios: a:b = 4:5, b:c = 5:8 ⇒ a:b:c = 4:5:8.

This question belongs to: Maths Ratio and Proportion

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