Math

Problem: Ms. Ashol has 20 boys and 16 girls in her mathematics class. If she chooses two students at random to work on the blackboard, what is the probability that both students chosen are girls?

What I did : I added the boys and girls 36

(16c2)/(36c16)

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  1. Yes 36
    first girl
    16/36
    second girl
    15/35
    so
    16/36 * 15/35

  2. I’m confused why it was 15/36 for the second girl though wouldn’t it be 15/35

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  3. Yes, I said
    first 16/36
    second 15/35

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