hi! i have a homework problem here that i'm stuck on:(adsbygoogle = window.adsbygoogle || []).push({});

What is the probability that a hand of 13 cards contain no pairs?

i know a 13-card hand is C(52, 13) but i have no idea how to represent the probability of that 13-card hand containing no pairs. can anyone give me a hint?

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# Homework Help: Discrete probability

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