Given that A bag contains $10$ red and $8$ white balls
To find: Probability that one ball is drawn at random and getting a white ball
Now,
Total number of balls $10+8=18$
Total number of white balls is $8$
As We know that the Probability = Number of favorable outcomes/ Total number of outcomes
Therefore, the probability of drawing a white ball from the urn is $8/18=4/9$