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

Sure, let's find the wrong number in the series. The series is: 17, 34, 53, 76, 104, 136, 173.

1. First, let's try to find a pattern in the series. It seems like each number is increasing, so it might be an arithmetic or geometric progression, or it might be based on some other pattern.

2. If we subtract each number from the one after it, we get: 34-17=17, 53-34=19, 76-53=23, 104-76=28, 136-104=32, 173-136=37.

3. It seems like the difference between each pair of numbers is increasing by 2 each time.

4. If we follow this pattern, the differences should be: 17, 19, 21, 23, 25, 27.

5. But in our series, the differences are: 17, 19, 23, 28, 32, 37.

6. So, the numbers that don't fit the pattern are 76, 104, 136, and 173.

7. If we correct these numbers according to the pattern, the series should be: 17, 34, 53, 72, 97, 124, 153.

So, the wrong numbers in the series are 76, 104, 136, and 173.