I don't know how to do these, can someone explain please.
1. A bag contains 5 red, 6 blue, 2 white and 7 green balls. If 2 are seleccted at random (without replacement), find the probability of getting at least 1 red ball.
Answer: 17/38
2. In a group of people, 32 are Australian born, 12 were born in Asia, 7 were born in Europe. If 2 of the people are selected at random, find the probability that at least 1 of them will be Australian born.
Answer: 368/425
3. There are 34 men and 32 women at a party. Of these, 13 men and 19 woman are married. If 2 people are chosen at random, find the probability that both will be married.
Answer: 496/2145
2007-06-10
21:38:40
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4 answers
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asked by
Anonymous
in
Mathematics