Bag contain 10 back and 20 white balls, One ball is drawn at random. What is the probability that ball is white
Pick:
A) 1  B) 2/3  C) 1/3  D) 4/3  E) 5/3
Explanation:   Total cases = 10 + 20= 
<gadget id="calculator">10 + 20</gadget>
<output>30</output>
30   Favourable cases= 20   So probability = 20/30 = 2/3   Answer: Option 2/3
<result>B</result>
Bag contain 10 back and 20 white balls, One ball is drawn at random. What is the probability that ball is white