Question : Directions: Select the letter that can replace the question mark (?) in the following series.
B, C, E, ?, Q, G
Option 1: F
Option 2: I
Option 3: E
Option 4: H
Correct Answer: I
Solution :
Given:
B, C, E, ?, Q, G
Add twice the difference of the previous term to get the next term in the series.
B + 1 = C; C + 2 × 1 = C + 2 = E; E + 2 × 2 = E + 4 = I; I + 2 × 4 = I + 8 = Q; Q + 2 × 8 = Q + 16 = G
Therefore, the required missing letter in the series is I. Hence, the second option is correct.
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