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

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

Your Answer

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, ans is - 9

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