Complete the series:
W-144, U-121, S-100, Q-81, ?
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → O-64
The letters move two places back each time, and the numbers are the squares of 12, 11, 10, 9, going down by one.
Letters: W, U, S, Q, and two places before Q is O
Numbers: \(12^2, 11^2, 10^2, 9^2\), so the next is \(8^2=64\)