There are 15 balls in a jar: 6 red, 7 blue and 2 green. If a single ball is drawn from the jar, what is the probability of that it is either blue or red?	Choose the correct choice from the following choices:
A) 1/12
B) 1/4
C) 11/15
D) 13/15
E) 3/4
Blue + Red =13   Total number of balls is  6+7+2= 
<gadget id="calculator"> 6+7+2</gadget>
<output>15</output>
15   So the answer is 13/15=13/15   Answer 13/15
<result>D</result>
There are 15 balls in a jar: 6 red, 7 blue and 2 green. If a single ball is drawn from the jar, what is the probability of that it is either blue or red?