Exercise 25.
Consider the function \(f:\N \to \N\) that gives the number of handshakes that take place in a room of \(n\) people assuming everyone shakes hands with everyone else. Give a recursive definition for this function.
Consider the function \(f:\N \to \N\) that gives the number of handshakes that take place in a room of \(n\) people assuming everyone shakes hands with everyone else. Give a recursive definition for this function.