SOLUTION: if two people are each choosing a number between 1 and 900, what is the probability they will choose the same number?

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Question 319515: if two people are each choosing a number between 1 and 900, what is the probability they will choose the same number?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
if two people are each choosing a number between 1 and 900, what is the probability they will choose the same number?
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1st person can choose any number.
2nd person has 1/900 chance of choosing the same.
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What are the odds of both people choosing the same number?
P(choose the same) = 1/900
P(do not choose the same) = 899/900
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odd for choosing the same number = (1/900)/(899/900) = 1:899

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Cheers,
Stan H.