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

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

Your Answer

9 because in this series the order is that even term is double of first term plus 1 and odd term is double of second term minus 1 so following this series we get the unknown no by 2×2+1=5 5×2-1=9 9×2+1=19 so the answer is 9.

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