How many 5-digit numbers without repetition of digits can be formed using the digits 0, 2, 4, 6, 8?
+1005 There are 4 choices for the first digit: cant be 0.
There are also 4 for the second, 3 for the third, 2 for the fourth, 1 for the fifth.
Thus, 4*4*3*2 = 96 ways.
