Find the next term in the alpha-numeric series:
Z1A, W8C, T27E, Q64G, N125I, ?
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → K216K
Each term has three parts, and each part follows its own rule.
First letters Z, W, T, Q, N go back 3 letters each time (Z → W → T → Q → N), so the next is N − 3 = K.
Numbers 1, 8, 27, 64, 125 are the cubes \(1^3, 2^3, 3^3, 4^3, 5^3\), so the next is \(6^3=\) 216.
Last letters A, C, E, G, I go forward 2 letters each time, so the next is I + 2 = K.
Putting the three parts together gives K216K.