will recieve a 21-foot outboard boat. If 1000 raffle tickets were sold and you purchased 20 tickets, what are the odds against your winning the boat?
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December 13th, 2009 at 2:58 am
There are 1000 tickets total, 20 of which are yours and 980 of which are not. So your odds in winning are 980 to 20, which reduces to 49:1.
December 13th, 2009 at 3:44 am
The probability that you don’t win (odds against your winning) is
980/ 1000 Since you don’t have 980 of the raffles.
This simplies to 49/50
But this is probability, to get the odds, we subtract the denominator by the numerator.
49 / (50 – 49) to get 49/1
Hence, the odds against you winning the boat is 49 to 1
Hope this helps.