Question : Directions: Select the option that is related to the fifth term in the same way as the second term is related to the first term and the fourth term is related to the third term.
121 : 10 :: 256 : 15 :: 441 : ?
Option 1: 17
Option 2: 20
Option 3: 21
Option 4: 19
Correct Answer: 20
Solution :
Given:
121 : 10 :: 256 : 15 :: 441 : ?
Like, 121 : 10→√121 = 11; 11 – 1 = 10
256 : 15→√256 = 16; 16 – 1 = 15
Similarly, for 441 : ?→√441 = 21; 21 – 1 = 20
So, 20 is related to 441. Hence, the second option is correct.
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