Problem #WSP-000049

Problems Combinatorics

Problem

We have \(6\) digits available: \(1,3,4,5,7\) and \(9\). We wish to make a \(3\)-digit number with different digits but only using these \(6\) digits. How many ways are there of doing this? What if we want the digits within the number to be arranged in an ascending order - how many numbers are left?