Finger on the pulse

I bought a package of something called “15 Bean Soup Mix” because the serving suggestion on the package made it look like it would be delicious. I peeked inside and did a quick check and sure enough, there are many different kinds of beans in there including garbanzos, pintos, kidneys, lentils, black-eyed peas, and I don’t know what all. They say it’s 15 in all but it’s hard to get a precise count the way they’re all mixed up in there. The recipe on the package says that I should rinse and sort the beans, but that can’t be right.