What is the probability of the player matching(adsbygoogle = window.adsbygoogle || []).push({}); exactly3 numbers from a 10 number lottery (0...9) w/o repetition, given the conditions:

- player and lottery pick 6 numbers;

- player always has a repeated number;

- lottery always has a repeated number.

for example:

123455

123455

Here there's many matches of 3. Because it's a match of 6/6 it means that there are C(6,3)=20 matches of 3... I think

Note. Legit choice:

123455

112345

It also means the player matched 4 numbers while picking only 3, which means C(4,3) ways to match a 3 number... match

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# What is the probability of #4

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