A box contains 2 red, 3 yellow. 2 balls are drawn randomly. What is the probability that the balls drawn contain balls of different colours? Choose one
A) 2/3	B) 3/5	C) 2/5	D) 1/3	E) 2/7
Total number of balls = 3+2= 
<gadget id="calculator">3+2</gadget>
<output>5</output>
5   n(S)= 5C2 = 5*4 / 2= 
<gadget id="calculator">5*4 / 2</gadget>
<output>10</output>
10   n(E)= 2C1 * 3C1 = 2*3= 
<gadget id="calculator">2*3</gadget>
<output>6</output>
6   Probability= 6/10 = 3/5   Answer is 3/5
<result>B</result>
A box contains 2 red, 3 yellow. 2 balls are drawn randomly. What is the probability that the balls drawn contain balls of different colours?