Question
Cookies are sold singly or in packages of 2 or 6. with this packaging, how many ways can you buy exactly 10 cookies? Please help immediately!!!
Answers
oobleck
6+1+1+1+1 = 10
6+2+2 = 10
you can replace each 2 with two 1's
or you can replace the 6 with three more 2's.
6+2+2 = 10
you can replace each 2 with two 1's
or you can replace the 6 with three more 2's.