A bag contains five white and four red balls.
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?
Answer/Solution
5/8
Steps/Work
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:B
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:B