Himanshu draws a ball from a bag that contains 10 white and 20 yellow balls. Find the probability of choosing a white ball.

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\frac{1}{3}

\frac{2}{3}

answer is A.

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Detailed Solution

It is given that,
Number of white balls = 10 and number of yellow balls = 20.
Total Number of outcomes

= 10 + 20 = 30

And number of white balls E = 10
Then probability,

P = \frac{Number of Favourable Outcomes}{Total Number of Outcomes}

\Rightarrow P = \frac{10}{30}

\Rightarrow P = \frac{1}{3}

So, probability of getting a white ball is

\frac{1}{3}

.
Hence, option (1) is correct.

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