18! / 3!4!5!6!*3!
The question should be about the number of ways he can choose 3 pins. Who knows how he gives them away?
Calvin has 3 red juggling pins, 4 blue juggling pins, 5 white juggling pins, and 6 green juggling pins. How many ways can he give a set of 3 juggling pins to Dan?
2 answers
I am not sure how to solve that?