# Answer to Question #10059 in Statistics and Probability for surina

Question #10059

A box contains 4 red, 5 green, and 6 white balls. two balls are drawn at random from the box. what is the probability that the balls drawn include only red and/or green??

Expert's answer

It doesnt matter for us what colour does ball that we draw has, as far it's not

white. So, when we draw first time, the probability of drawing not white ball is

(4+5)/(4+5+6)=0.6. Next, knowing that we draw not white ball drawing out another

not white is 8/(8+6)=0.571. The answer for our question is a product of these

two numbers: 0.6*0.571=0.343

white. So, when we draw first time, the probability of drawing not white ball is

(4+5)/(4+5+6)=0.6. Next, knowing that we draw not white ball drawing out another

not white is 8/(8+6)=0.571. The answer for our question is a product of these

two numbers: 0.6*0.571=0.343

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