A bag contains 5 red, 2 green balls. 3 balls are drawn randomly. What is the probability that balls drawn contain exactly two green balls?  Choose one
A) 1/7	B) 2/9	C) 3/11	D) 4/17	E) 2/3
Total number of balls = 5+2= 
<gadget id="calculator">5+2</gadget>
<output>7</output>
7   n(S)= 7C3 = 7*6*5 / 3*2 = 35   n(E) = 2C2* 5C1 = 5   Probability = 5/35 = 1/7   1/7nswer is 1/7
<result>A</result>
A bag contains 5 red, 2 green balls. 3 balls are drawn randomly. What is the probability that balls drawn contain exactly two green balls?