Question

160 118 83 65 34 20 which one is wrong in this series

Answer 1

Answer:

65

Explanation:

20+14=34

34+21=55

55+28=83

83+35=118

118+42=160

Answer 2

Answer:

65

Explanation:

According to the question,

Series is 160 118 83 65 34 20

Need to find wrong in the series.

From the observations we get,

$20+14=34\\\\34+31=65\\\\55+28=83\\\\83+35=118\\\\118+42=160$

Now, from the above calculation, we conclude that only 65 is wrong because in all numbers the multiple of 7 is added but in 34, 31 is added and 31 is not a multiple of 7.

If we find correct in the place of 65,

We need to add a multiple of 7. in the place of 31, we can add 21.

After adding 21 in 34, we get 55.

So, the correct series is 160 118 83 55 34 20

Hence, 65 is wrong in this series.