Question

Find the value of N if nC2 = nP1

how do I start this?

Answer 1

its a permutation question
nC2 is n!/(n-2)!2!

Answer 2

n!/(n-1)!1! i think

Answer 3

You can eventually cancel \(n!\) from the last equation. Also, \((n-1)!=(n-1) \times (n-2)!\)

Answer 4

im still confused of what to do from there

Answer 5

n= 3