http://web2.0calc.com/questions/a-bag-contains-some-marbles-each-of-which-is-one-of-four-colors-red-white-blue-and-green-at-least-one-of-the-marbles-is-red-the-comp
You welcome Mellie.
I have given this question my best shot :)
I need a really good explanation here. Because it is a bit hard for me to understand. And thanks if you have helped me all this time (CPhill, Melody, Geno, Alan, Rosala, Heureka, and Happy7) Thanks!!!
+1836 
