Instructions

What will come in place of the question mark (?) in each of the following number series ?

Question 2

7, 11, 19, 35, 67, ?

Solution

Consecutive powers of 2 are added.

7 + $$2^2$$ = 11

11 + $$2^3$$ = 19

19 + $$2^4$$ = 35

35 + $$2^5$$ = 67

67 + $$2^6$$ = 131

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