Discrete Mathematics Level 3

I have 7 pairs of red socks, 6 pairs of blue socks, 5 pairs of green socks in my drawer. If I randomly pick out 4 socks, what is the probability that I will get (at least) a matching pair?

Details and Assumptions

  • Besides the colour, there is no difference between a left sock and a right sock.
Flickr George Redgrave

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