Answer:
[tex]\frac{2}{11}[/tex]
Step-by-step explanation:
First, find the probability of him pulling out a book.
There are 11 objects in total, and there are 4 books.
So, the probability of pulling out a book is [tex]\frac{4}{11}[/tex]
Next, find the probability of him pulling out a DVD after.
Since a book was taken out, there are only 10 objects left. There are 5 DVDs.
So, the probability of pulling out a DVD is [tex]\frac{5}{10}[/tex], or simplified to [tex]\frac{1}{2}[/tex]
To find the probability that this happens in order, multiply the probabilities:
[tex]\frac{4}{11}[/tex] x [tex]\frac{1}{2}[/tex]
= [tex]\frac{2}{11}[/tex]
So, the probability is [tex]\frac{2}{11}[/tex]