| Line 4: | Line 4: | ||
On bottom I put all possible numbers (80,11) | On bottom I put all possible numbers (80,11) | ||
| + | |||
| + | ---- | ||
| + | |||
| + | I think it is C(11,7)/C(80,11) since C(11,7) calculates the ways to choose 7 of the 11 winning numbers while C(80,11) calculates all the possible winning numbers. | ||
Revision as of 20:57, 1 October 2008
Hey! I was looking at this one, and kind of confused on how to approach it, right now I have (80x79x78x77x76x75x74)/C(80,11) = 1/26122320. But I do not think that this is correct, please help!
On the top I put number of ways to pick 7 numbers which will result in winning out of the 11 which could result in winning.
On bottom I put all possible numbers (80,11)
I think it is C(11,7)/C(80,11) since C(11,7) calculates the ways to choose 7 of the 11 winning numbers while C(80,11) calculates all the possible winning numbers.
