in a box there are 3 black balls 2 white balls....2balls are taken at randam what is the probability of white balls

Probability of drawing the first white ball is 2/5, as there are 2 white balls in the total of 5 balls,

Now as one ball is selected, we have 1 white ball and 3 other balls, so probability of drawing white ball for 2nd time, 1/4

So, 2/5 * 1/4 = 1/10 (for drawing two white balls)