I have what appears (to my non-mathematical brain) to be a relatively simple probability problem, but I don't know how to go about solving it. Perhaps someone here could help, and "explain their working" so that I can figure it out for myself in future.

Here's the problem:

- I choose 4 numbers from 1-49
- A random number generator selects 7 numbers from 1-49, with each number only appearing once
- What is the probability that my 4 chosen numbers
allappear within the selection of 7?- The sequence in which the numbers appear is not important.

Thanks for your help!