here's a problem I'm trying to help my 7th grade daughter with and I
just cant remember how to solve it...
"You are given 5 different weights, marked 1lb, 2lb, 5lb, 6lb, and
10lb. How many different weights can you obtain using these weights?"
My first thought was to do something with 5!, but that doesn't address
the need to get unique combinations.
I've tried searching in a number of different ways to find similar
problems, but can't find anything. Seems like it should be a simple
Can anyone help?