SOLUTION: Pick& Save grocery stores in Wisconsin are giving out scratch off tickests when you buy groceries . There are nine symbols covered up. Three of them are the same. You have to scra

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Question 533381: Pick& Save grocery stores in Wisconsin are giving out scratch off tickests when you buy groceries . There are nine symbols covered up. Three of them are the same. You have to scratch off the three identical ones to win. What are the odds of picing three of the same out of nine?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
For the 1st scratch, you have +3%2F9+ probability
For the 2nd scratch, you have +2%2F8+ probability
For the 3rd scratch, you have +1%2F7+ probability
+%283%2F9%29%2A%282%2F8%29%2A%281%2F7%29+=+6%2F504+
+6%2F504+=+1%2F84+
In terms of odds, that is 83 to 1 against
I think this is right, you might want another opinion