<PRE><B>Question 755632</B>
90 people go through the checkout, each choose a random number between 1 and 90, a machine generates a random number between 1 and 90, what are the odds of someone guessing the number correctly. 
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Probability you win is 1/90
Probability you lose is 89/90
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Odds For you winning = (1/90)/(89/90) = 1:89
Odds Against you winning = (89/90)/(1/90) = 89:1
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Cheers,
Stan H.</PRE>