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) 5/8 B) 5/9 C) 5/7 D) 5/2 E) 5/3
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 4C2 . 4C1 ways.   The required probability = (5 * 4)/9C2 = 20/36 = 5/9   Answer: 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?