You can put this solution on YOUR website! what are the odds that two people would pick the same seven books from a list of 150
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P(for) = 1/150C7
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P(against) = [(150C7)-1]/150C7
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Odds for = P(for)/P(against) = 1:(150C7)
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FYI: 150C7 is a HUGH number.
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Cheers,
Stan H.
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