Question

If there are:

6 red marbles
10 yellow marbles
5 green marbles
and 1 blue marble What is the probability of picking 1 blue marble and 1 green marble?

(Once a marble is chosen it is NOT put back into the box).

(Write your answer in the form of a decimal, round to 2 places).

Answer 1

total number of marble=22

probability of picking 1 blue marble= 1/22

=45×10^-2

probability of getting a green ball= 5/21

= 238×10^-3