What is the next letter in the series A, C, E, G, ...?

Answer and explanation

Correct answer: A. I

  1. Step 1: The positions are 1, 3, 5, 7, so the gap is always 2.
  2. Step 2: The next position is 9, which is I.
Answer
I.
Why not the others: H is only one place after G, J is two places after I, and K is four places after G.

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