Mark makes easter eggs. Each egg contains 6 toffees,the toffees being selected from 3 different sorts. How many...?
different selections are possible if each egg must contain at least one toffee of each sort?
- roderick_youngLv 74 months ago
Let's say the toffees are A, B, and C.
The egg must have at least one toffee of each sort, so each egg looks like
A B C X X X
where X is one of A, B, or C.
There are 3 choices for each X, and 3 X's, so that's 3*3*3 ways to do it. There's your answer.
- JJLv 74 months ago
Sorry, I started eating the eggs before I finished counting them. It lost track after 8, so it's at least that many.