Which of the following numbers will replace the question mark (?) in the given series?
12,14,18,26,42, ?

Given: 12, 14, 18, 26, 42,?

Logic: The pattern follows adding powers of 2: (+2, +4, +8, +16, +32), which is double of previous deiffference.

12 + 2 = 14
14 + 4 = 18
18 + 8 = 26
26 + 16 = 42
42 + 32 = 74
Thus, the correct option is (a) 74