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Theoretical Probability

If a ball is ...

Question

If a ball is drawn from a bag containing 20 balls of different colours, then probability of a white ball is _____.

A

\frac{1}{10}

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B

\frac{1}{15}

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C

\frac{1}{20}

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D

\frac{1}{25}

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Solution

The correct option is C $\frac{1}{20}$
There are 20 different coloured balls in the bag, 1 of them is white,
p(white)= $\frac{1}{20}$

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