Which letter will replace the question mark (?) in the following letter series:
W, R, ? , K, I, H
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. N.
Given series: W, R, ? , K, I, H
W - 5 = R, R - 4 = N, N - 3 = K, K - 2 = I, I - 1 = H