[Cobra]

It was supposed to be 36/52*32/51*28/50=.243 its the same answer I just typed it wrong. You can pick any card out of the 36 for the first card but after that you need to eliminate the remaining three cards of that rank. So your second card is picked out of the remaining eight ranks or 32 cards, etc.

If you know combinations it could be answered as follows:

= (9 c 3)*4*4*4/(52 c 3)=.243

That is choose three seperate ranks out of 9, choose one card out of four for each of those ranks (4 raised 3), and divide by the total ways to choose 3 cards out of 52.