In the following question, select the related number pair from the given alternatives:
15 : 256 :: 18 : ?
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → 361
The second number of each pair is the square of one more than the first number.
\(15+1=16\), and \(16^2=256\)
\(18+1=19\), and \(19^2=361\)