What would replace the question mark (?) in the given series?
ACE, CEG, EGI, _________, IKM
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → GIK
Within each group the letters go up by 2 (alternate letters), and each group starts 2 letters after the start of the previous one.
First letters: A, C, E, G, I
The missing group starts with G and goes up by 2: G, I, K