1. The problem statement, all variables and given/known data lets say i have an int n that is greater than 2. I know n!-1 = xk where x and k are integers I must show that x <= n leads to a contradiction 3. The attempt at a solution i assume x = n n!-1 =nk (n-1)! -1/n = k it seems to me that because of the 1/n k would not be an integer which would be a contradiction. But i am not even sure if that is true that it would not be an integer in any case. Am i going about this the right way?