Question

A bag contains 5 black and 3 white balls. Two balls are drawn at a random one after the other without replacement . What is the probablity that both are white.

Answer 1

Total numbers of balls in the bag are 8.

Two balls are drawn one after the other without replacement.

Let A be the event of drawing a white ball.

Then, required probability = $\frac{3}{8}\times \frac{2}{7}=\frac{3}{28}$