Ratio & Proportion · Question 22 · Medium

What is the sub-duplicate ratio of 64 : 121?

  1. 4 : 11
  2. 11 : 8
  3. 8 : 11
  4. 4096 : 14641
Answer and explanation

Answer: C. 8 : 11

Explanation: The sub-duplicate ratio is the ratio of the square roots: √64 : √121 = 8 : 11.

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