Find the missing number in the series: 2, 5,__ , 19 , 37, 75

1. 10 2. 9 3. 7 4. 8

Your Answer

2*2+1=5 , 5*2-1=9 , 9*2+1=19 , 19*2-1=37 , 37*2+1=75 Answer is 9.

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