Question : Directions: In the following question, select the related number from the given alternatives.
7 : 63 :: 11 : ?
Option 1: 143
Option 2: 147
Option 3: 146
Option 4: 145
Correct Answer: 143
Solution :
Given:
7 : 63 :: 11 : ?
Subtract 1 from the square of the successor of the first number to get the second number of the given pair.
Like, 7 : 63→The successor of 7 is 8→(8)
2
= 64; 64 – 1 = 63
Similarly, 11 : ?→The successor of 11 is 12→(12)
2
= 144; 144 – 1 = 143
Hence, the first option is correct.
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