Question

A bag contains 2 yellow marbles and 5 red

marbles. Two marbles are drawn at random.
One marble is drawn and not replaced. Then a
second marble is drawn. What is the
probability that the first marble is red and the
second one is yellow?

Answer 1

Explanation:

since the red marble is not replaced after selecting next time the total sample for yellow marble would be 7-1 i.e 6