Find the wrong number in the given series .17, 34, 53, 76, 104 , 136, 173Options5313676104173

The given series is 17, 34, 53, 76, 104, 136, 173.

The pattern seems to be that each number is increasing by a certain amount.

Let's find the difference between each pair of numbers:

34 - 17 = 17 53 - 34 = 19 76 - 53 = 23 104 - 76 = 28 136 - 104 = 32 173 - 136 = 37

The differences between the numbers are increasing by 2 each time, except for the last difference (37), which increased by 5 from the previous difference (32).

So, the number 173 is wrong. The correct number should have been 168 (136 + 32 + 2 = 168).

Therefore, the correct answer is 173.