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

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

Your Answer

9

37
  • 2*2+1=5;5*2+1=10;10*2+1=21;so,10*2-1=19;19*2-1=37;37*2+1=75 format is +1,+1,-1,-1,+1,+1,-1,-1............

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