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What is the correct answer?
4
Bag contain 10 back and 20 white balls, One ball is drawn at random. What is the probability that ball is white
A.
1
B.
$\frac{2}{3}$
C.
$\frac{1}{3}$
D.
$\frac{4}{3}$
Correct Answer :
B.
$\frac{2}{3}$
Total cases = 10 + 20 = 30
Favourable cases = 20
So probability =
$\frac{20}{30}=\frac{2}{3}$
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