Which of the following letter will replace the question mark (?) in the given series?
H, J, L, N, P, ?

Correct option is C

The letters are: H, J, L, N, P

The alphabetical positions are:
H = 8
J = 10
L = 12
N = 14
P = 16
The positions are increasing by 2 each time.
After P (position 16), adding 2 gives the next letter at position 18, which is R.
Thus, the missing letter is R.
Correct answer is (c) R.