Asked by Helen

nPr=6720 and nCr=56, then the value if r is___?

Answers

Answered by Steve
6720/56 = 120

So, you have nPr = nCr * 5!

That means that r=5.

Review the definitions of nPr and nCr to see why this is so.
There are no AI answers yet. The ability to request AI answers is coming soon!