Gr.12 Data Management
posted by Amaran on .
How many numbers greater than 300 000 are there using only the digits 1, 1, 1, 2, 2, 3?

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