Question
How many numbers greater than 300 000 are there using only the digits 1, 1, 1, 2, 2, 3?
Answers
Reiny
clearly the first digit must be the 3, so there are only the other 5 digits to arrange.
we have 3 alike of one kind and 2 alike of another,
so the number of ways = 1(5!)/(3!2!) = 10
we have 3 alike of one kind and 2 alike of another,
so the number of ways = 1(5!)/(3!2!) = 10