A bag contains 9 green and 8 white balls. If two balls are drawn simultaneously, the probability that both are of the same colour is Choose the correct choice from the following answers
A) 8/17 B) 2/5 C) 3/5 D) 11/15 E) 7/15
Drawing two balls of same color from nine green balls can be done in 9C₂ ways.   Similarly from eight white balls two can be drawn in ⁸C₂ ways.   P = 9C₂/¹⁵C₂ + ⁸C₂/¹⁵C₂ = 8/17   8/17NSWER:8/17
<result>A</result>
A bag contains 9 green and 8 white balls. If two balls are drawn simultaneously, the probability that both are of the same colour is