PDA

View Full Version : Probability


Leshan
Jan 31, 2011, 09:30 AM
In a certain lottery, 3 numbers between 1 and 9 inclusive are drawn. These are the winning numbers. How many different selections are possible? Assume that the order in which the numbers are drawn is not important.

galactus
Jan 31, 2011, 11:11 AM
This is a straightforward combination problem. The number of ways to choose 3 items from 9.