Find the next term in the following alphanumeric series:
A1Q, E2S, I6U, O21W, ?
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → U 88 Y
Each term has three parts, and each part follows its own rule:
First letters: A, E, I, O are the vowels in order, so the next is U
Numbers: each is the one before it multiplied by 1, 2, 3, 4, ... and then increased by the same number
\(1\times1+1=2\), \(2\times2+2=6\), \(6\times3+3=21\)
Next: \(21\times4+4=88\)
Last letters: Q, S, U, W move two letters forward each time, so the next is Y
The next term is U88Y.