Multiple choice

Directions: In the following question, there is a certain relationship between two given numbers on one side of (: :) and one number is given on the other side of (: :) while another number is to be found from the given alternatives having the same relationship with this number as the numbers of the given pair bear. Choose the best alternative.

9 : 25 : : 36 : ?

  1. 81

  2. 25

  3. 64

  4. 512

  5. 729
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This is the correct option as it follows the correct pattern of (x - 1)2 : (x + 1)2. So, if x = 4, then (4 - 1)2 = 9 and (4 + 1)2 = 25. If x = 7, then (7 - 1)2 = 36 and (7 + 1)2 = 64. 

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