Question
Select the number from among the given options that can
replace the question mark [?] in the following series. 7, 16, 36, 78, 164, 338, [?]Solution
The logic followed here is as follows: 7 X 2 + 2 = 14 + 2 = 16 16 X 2 + 4 = 32 + 4 = 36 36 X 2 + 6 = 72 + 6 = 78 78 X 2 + 8 = 156 + 8 = 164 164 X 2 + 10 = 328 + 10 = 338 338 X 2 + 12 = 676 + 12 = 688
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