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Math probability

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Trevor's soccer bag holds lots of socks: 4 red, seven green, three white, and two purple. He takes two socks, what is the probability that he will get red and green socks?

  • Math probability -

    4+7+3+2 = 16 socks

    prob red first = 4/16
    prob green second = 7/15
    prob that happens = (4*7)/(16*15)

    prob green first = 7/16
    prob red second = 4/15
    so again (4*7)/(16*15)

    so in the end 2 * 4 * 7 / (15*16)
    = .233

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