Question 20
A bag contains 4 red and 4 black balls. Three balls are chosen at random without replacement. The probability of choosing 2 red balls and 1 black ball is $n/m$. Find $m+n$.
For this practice question, write n/m in lowest terms with positive integers n and m. The source does not explicitly state this convention.
For this practice question, write n/m in lowest terms with positive integers n and m. The source does not explicitly state this convention.