Question 490278
When a single card is drawn from a shuffled deck of cards, find the odds
against getting a 9. 
1. 1:12
2. 12:1
3. 51:1
4. 1:51 
I think it is 12:1 
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Odds against 9 = P(no 9)/P(9) = (12/13)/(1/13) = 12:1
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You are correct.
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Cheers,
Stan H.