+321 1.Of all the four-digit positive integers containing only digits from the set {2,4,6,8} what fraction of them have at least one of their digits repeated?
+37146 I THINK:
Any digit repeated 4 x 4 x 4 x 4 = 256 four-digit numbers possible
No repeats 4 x 3 x 2 x 1 = 24 256 -24 = 232 with repeats
232/256 = 29/32
