4 red,6blue,26 green ball. person choose 1 at a time either blue or red. what is probability that he choose red ball  Choose the correct choice from the following answers:
A) 0.1
B) 0.2
C) 0.3
D) 0.4
E) 0.5
probability that none of ball is blue or red is=26/36=13/18   probability of blue or red ball=1/13/18=5/18   probability of only red ball in blue or red ball=(4/36)/(5/18)= 
<gadget id="calculator">(4/36)/(5/18)</gadget>
<output>2/5 = around 0.4</output>
0.4   ANSWER:0.4
<result>D</result>
4 red,6blue,26 green ball. person choose 1 at a time either blue or red. what is probability that he choose red ball