A bag contains 6 red, 2 yellow and 4 green balls. 3 balls are drawn randomly. What is the probability that the balls drawn contain balls of different colours?
Choose the most appropriate option:
A) 12/55
B) 3/5
C) 3/11
D) 1/4
E) 7/16
Total number of balls = 6+2+4= 
<gadget id="calculator">6+2+4</gadget>
<output>12</output>
12   n(S)= 12C3 = 12*11*10 / 3*2 = 220   n(E) = 6C1 * 2C1 * 4C1 = 48   Probability = 48/220 = 12/55   12/55nswer is 12/55
<result>A</result>
A bag contains 6 red, 2 yellow and 4 green balls. 3 balls are drawn randomly. What is the probability that the balls drawn contain balls of different colours?