Bag contain 10 back and 20 white balls, One ball is drawn at random. What is the probability that ball is white
1
2/3
1/3
4/3
Explanation:
Total cases = 10 + 20 = 30
Favourable cases = 20
So probability = 20/30 = ⅔
Total cases = 10 + 20 = 30
Favourable cases = 20
So probability = 20/30 = ⅔