# An urn contains 10 red and 8 white balls. One ball is drawn at random. Find the probability that the ball drawn is white.

**Given:**

An urn contains 10 red and 8 white balls

One ball is drawn at random

**To find:** Find the probability that the ball drawn is white.

**
**

**Solution:**

Number of red balls = 10

Number of white balls = 8

Total number of possible events = 18

Number of favourable events, the event of drawing a white ball = 8

So probability of drawing a white ball

= $\frac{Number\ of\ favourable\ events}{Number\ of\ possible\ events}$

= $\frac{8}{18}$ = $\frac{4}{9}$ Answer

**Therefore the probability of drawing a white ball is $\frac{4}{9}$**
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