A-D-I-P-?
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W
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Q
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Y
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O
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R
Reveal answer
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C
Correct answer
Explanation
Converting letters to their alphabetical positions: A=1, D=4, I=9, P=16. The differences are: 4-1=3, 9-4=5, 16-9=7. These are consecutive odd numbers (3, 5, 7). The next odd number is 9, so P=16+9=25, which is Y (the 25th letter).
AI explanation
Converting each letter to its position in the alphabet: A=1, D=4, I=9, P=16 — these are the perfect squares 1^2, 2^2, 3^2, 4^2. The next perfect square is 5^2=25, and the 25th letter of the alphabet is Y.