Originally Posted by

**quixotecoyote** Ok, so I'm doing a project and I've run into a problem.

I have 5 rows of items.

3 items in the first row (1.1, 1.2, 1.3)

4 items in the second row (2.1, 2.2, 2.3)

5 items in the third row (3.1, 3.2, etc.)

4 items in the fourth row and

5 items in the fifth row

If I was allowed to pick one item from each row, how many possible combinations of items would there be? (eta: Yeah, I know I could count, but I bet there's an easier way to do it)

More importantly, what is this kind of problem called? I'm planning to do a bit more with this and I've love to know if there's an easy way to figure out what each of those combinations would be.