A bag contains five white and four red balls. Two balls are picked at random from the bag. What is the probability that they both are different color?	Answers:
A) 4/9 B) 5/9 C) 7/9 D) 8/9 E) 1/3
Explanation:   Two balls can be picked from nine balls in ⁹C₂ ways.   We select one white ball and one red ball from five white balls and four red balls. This can be done ⁵C₁ . ⁴C₁ ways.   The required probability = (5 * 4)/⁹C₂ = 20/36 = 5/9   ANSWER IS 5/9
<result>B</result>
A bag contains five white and four red balls. Two balls are picked at random from the bag. What is the probability that they both are different color?