Question

A box contains 4 plain pencils and 4 pens. A second box contains 1 color pencil and 9 crayons. One item from each box is chosen at random. What is theprobability that a plain pencil from the first box and a color pencil from the second box are selected?Write your answer as a fraction in simplest form.

Answer 1

We will have that the probability would be the probability of event A times the probability of event B, that is:

$P=\frac{4}{8}\cdot\frac{1}{10}\Rightarrow P=0.05$

So, the probabilty is of 5%.