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

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

Your Answer

ans: 9 2*+1=5,5×2-1=9,9×2+1=19....

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