Instructions
In each of the following number series, a wrong number is given, find out the number.
Solution
The series can be rewritten as:
7, 7x1 + 1=8, 8x2 +2=18, 18x3 +3=57, 57x4 +4=232, 232x5 + 5=1165
=> 228 is not present in the series and is the wrong one.
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