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Standard XII

Mathematics

Classical Definition of Probability

A bag contain...

Question

A bag contains 4 red and 3 white balls. A ball is drawn at random from the bag. Find the probability of getting a white ball.

\frac{1}{3}

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\frac{2}{7}

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\frac{3}{7}

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\frac{2}{3}

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Solution

The correct option is B $\frac{3}{7}$
The outcome of a ball drawn at random from the bag can be getting a white ball or red ball.
Number of white balls= $3$
Total number of balls= $7$
$P ($ white $) =$ $\frac{3}{7}$

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A bag contains 4 red and 3 white balls. A ball is drawn at random from the bag. Find the probability of getting a white ball.

The correct option is B 37The outcome of a ball drawn at random from the bag can be getting a white ball or red ball.Number of white balls=3Total number of balls=7P(white)=37

The correct option is B $\frac{3}{7}$
The outcome of a ball drawn at random from the bag can be getting a white ball or red ball.
Number of white balls= $3$
Total number of balls= $7$
$P ($ white $) =$ $\frac{3}{7}$