## Online Course Discussion Forum

### II-A Combinatorics Short Answer Section

Re: II-A Combinatorics Short Answer Section

It is ok to use a calculator to check your answers, but try to think of tricks you could use to find these without one. Here, for example, you could use the fact that $4^{10} = (2^2)^{10} = \left(2^{10}\right)^2$.