Solve the number series if you are genius Find missing Number

Solve the number series if you are genius Find missing Number

updated on Friday, February 23, 2018

Solve the number series if you are genius Find missing Number:

Hi, Here is an another interesting logic puzzle for you guys. In this puzzle, you will have to find out missing number in this series.

90% Fail To Answer: What's missing number in 2, 6, 12, 20, 30, 42, 56, ??, 90

find missing number

Do not forget to share it with your friends.

Answer:

Answer is = 72

Logic

Number * (Number + 1) = Answer

1 * (1 + 1) = 1 * 2 => 2
2 * (2 + 1) = 2 * 3 => 6
3 * (3 + 1) = 3 * 4 => 12
4 * (4 + 1) = 4 * 5 => 20
.
.
.
8 * (8 + 1) = 8 * 9 => 72

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