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:

Question

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

Answer 1

a 5/16
b 9/16
c 7/16

Answer 2

I believe you're right