Question

A bag contains 6 white marbles and 4 black

marbles. A marble is drawn from the bag
and then a second marble is drawn without
replacing the first one.
What is the probability of drawing a white
marble on the first draw, followed by a black
marble on the second?

Answer 1

4/15

Explanation:

P(drawing white marble and black marble)

= 6/10 × 4/9 [9 as there is no replacement]

= 4/15