Posted by **alicia** on Monday, March 8, 2010 at 9:22pm.

A box contains four red marbles, seven white marbles and five blue marbles. If one marble is drawn at random, find the probability for each of the following:

(a) A blue marble drawn. _____________

(b) A red or a blue marble is drawn. _____________

(c) Neither a red nor a blue marble is drawn. _____________