Choose the missing terms out of the given alternatives. Z, X, S, I, R, R, ?, ?
Options:
A .  G,I
B .  J, I
C .  J,K
D .  K,M
Answer: Option A 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.
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