Study the following arrangement of the English alphabet and answer the questions given below:

P M S K Q A B M N O P Q R W
If letters at even positions are replaced by a succeeding letter and letters at odd places are replaced by a preceding letter, then which letters will be twice in number in the new series?

Question

Question

Answer 1

Given series: P M S K Q A B M N O P Q R W

1) Letters at even positions: M, K, A, M, O, Q, W

Succeeding letters: N, L, B, N, P, R, X

2) Letters at odd positions: P, S, Q, B, N, P, R

Preceding Letters: O, R, P, A, M, O, Q

New series: O, N, R, L, P, B, A, N, M, P, O, R, Q, X

Letters appearing twice in the new series: O, N, R and P

Hence, the answer is option 3.