In the following alphanumberic series what letter comes next K N P S U?

The pattern in the series K, N, P, S, U involves skipping one letter after each. The sequence jumps by two letters: K (skip L, M) to N, N (skip O) to P, P (skip Q, R) to S, and S (skip T) to U. Following this pattern, after U, we skip V and W, leading us to the letter Y. Thus, the next letter in the series is Y.