Find out the odd one out.
4,9,19,39,79,160,319
39
160
319
19
Explanation:
Double the number and add 1 to it.
So the series will be 4,9,39,79,159,319.
So 160 is wrong.
Double the number and add 1 to it.
So the series will be 4,9,39,79,159,319.
So 160 is wrong.