Question

In each series, only one number is wrong. Find out the wrong number.
6, 7, 9, 13, 26, 37, 69

Options

• 7

• 26

• 69

• 37

Answer 1

26
Explanation:                           21
6          7          9         13         26        37        69

    +1        +2        +4         +8       +16       +32
Hence, 21 should come in place of 26 in the series.