Which letter will come in place of the question mark (?) in the given series?
A, C, E, D, C, E, G, F, ?
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → E
Write the letters as their places in the alphabet and look at the steps from one letter to the next.
Places: A (1), C (3), E (5), D (4), C (3), E (5), G (7), F (6)
Steps: \(+2,\ +2,\ -1,\ -1,\ +2,\ +2,\ -1\)
The steps +2, +2, −1, −1 repeat, so the next step is \(-1\)
\(6-1=5\), which is E
So the missing letter is E.