Question: Z, X, S, I, R, R, ?, ?
[A].G,I
J, I
J,K
K,M
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
Note that the numbers representing the difference between the consecutive terms of the series again from a series – 2, 5, 10, 17, 26, 37, 50 – in which the pattern is +3, +5, +7, +9, +11, +13.