The Series 1+ 1/1.3+1/1.3.5+

It seems like you're asking for the sum of a series. The series you've given is a type of reciprocal series, where each term is the reciprocal of the product of consecutive odd numbers.

Here's how you can calculate the sum:

1. Identify the pattern of the series. In this case, each term is the reciprocal of the product of consecutive odd numbers starting from 1.

2. Calculate the first few terms of the series:

   • The first term is 1.
   • The second term is 1/(1*3) = 1/3.
   • The third term is 1/(135) = 1/15.
   • And so on.

3. To find the sum of the series, you would typically add up these terms. However, this series is infinite, so it doesn't have a finite sum.

4. Instead, you can find the sum to a certain number of terms. For example, the sum of the first three terms is 1 + 1/3 + 1/15 = 1.355...

5. If you want to find the sum to n terms, you would continue this process until you've calculated the nth term and add up all the terms.

Please note that the sum of an infinite series is not always defined, and in this case, the series does not converge to a finite number.