bag contains 7 green and 8 white balls. If two balls are drawn simultaneously, the probability that both are of the same colour is -.  Options:
A) 7/15 B) 2/8 C) 7/11 D) 13/5 E) 87
Explanation:   Drawing two balls of same color from seven green balls can be done in â·Câ‚‚ ways.   Similarly from eight white balls two can be drawn in â¸Câ‚‚ ways.   P = â·Câ‚‚/Â¹âµCâ‚‚ + â¸Câ‚‚/Â¹âµCâ‚‚ = 7/15   7/15
<result>A</result>
bag contains 7 green and 8 white balls. If two balls are drawn simultaneously, the probability that both are of the same colour is -.