bag contains 7 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) 7 / 15	B) 2 / 8	C) 7 / 11	D) 13 / 5	E) 87

Rationale: explanation : drawing two balls of same color from seven green balls can be done in â  · c â ‚ ‚ ways . similarly from eight white balls two can be drawn in â  ¸ c â ‚ ‚ ways . p = â  · c â ‚ ‚ / â ¹ â  µ c â ‚ ‚ + â  ¸ c â ‚ ‚ / â ¹ â  µ c â ‚ ‚ = 7 / 15 a
Answer: A