A bag contains 7 green and 8 white balls. If two balls are drawn simultaneously, the probability that both are of the same colour is -.

3 Answers on this Question

1. They only two colours.
   Probability that one colour is chosen
   Is . 2 green or 2 white
   =2/2+2
   =1/2

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2. The answer is the addition of the odds of those two events (Two greens or two whites)
   1. The green odds are (7/15*6/14) = 0.20
   2. The white odds are (8/15*7/14) = 0.26

   The final odd is 0.46 meanning the probability is 46%

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3. I agree with @TUMWINE PETER

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