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

Question

Share Report Error

Find the mean proportional between 11 and 61.

A. 28

B. 25

C. 72

D. 50

Answer: Option B

Solution (By JKSSB Mock Tests)

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

This question belongs to: Maths Ratio and Proportion

Request complete Subject PDF

Discuss this Question (0)

No comments yet. Be the first to start the discussion!

Practice More Ratio and Proportion Questions

Question #1

If a:b = 2:6 and b:c = 6:11, then a:b:c = ?

A. 1:6:12

B. 2:7:11

C. 4:12:22

D. 2:6:11

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option D

Explanation:
Combine ratios: a:b = 2:6, b:c = 6:11 ⇒ a:b:c = 2:6:11.

This question belongs to: Maths Ratio and Proportion

Question #2

Ratio of present ages of A and B is 4:6. After 8 years, the ratio becomes 6:9. Present age of A is?

A. 36 years

B. 88 years

C. 49 years

D. 44 years

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option D

Explanation:
Let ages 4k and 6k. Then (4k + 8)/(6k + 8) = 6/9. Solving gives k ≈ 11, age of A = 4*11 = 44.

This question belongs to: Maths Ratio and Proportion

Question #3

If a:b = 7:4 and b:c = 4:10, then a:b:c = ?

A. 6:4:11

B. 7:4:10

C. 14:8:20

D. 7:5:10

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option B

Explanation:
Combine ratios: a:b = 7:4, b:c = 4:10 ⇒ a:b:c = 7:4:10.

This question belongs to: Maths Ratio and Proportion

Explore All Ratio and Proportion MCQs