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.
So, you have nPr = nCr * 5!
That means that r=5.
Review the definitions of nPr and nCr to see why this is so.
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