Find the missing number: 2, 5, 9, 19, 37, ?

Find the missing number: 2, 5, 9, 19, 37, ?

A 78

B 76

C 75

D 73

Solution

Correct Answer: Option C

2×2=4+1=5;

5×2=10-1=9;

9×2=18+1=19;

19×2=38-1=37;

37×2=74+1=75;

So, the required missing number=75