In the following number series a wrong number is given. Find out that number. 8, 18, 40, 86, 178, 370, 752 ?->(Show Answer!)

1. In the following number series a wrong number is given. Find out that number. 8, 18, 40, 86, 178, 370, 752

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By: anil on 05 May 2019 01.55 am

In the series : 8, 18, 40, 86, 178, 370, 752 The pattern followed is that we multiply the first number by 2 and add 2 to it, for the second number, we multiply by 2 and add 4, for the third, multiply by 2 and 6 and so on... 8 x 2 + 2 = 18 18 x 2 + 4 = 40 40 x 2 + 6 = 86 86 x 2 + 8 = 180 180 x 2 + 10 = 370 370 x 2 + 12 = 752 So, the wrong number is 178.

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