question_answer

There are twenty books in a library numbered 61 to 80 on their cover page. What is the probability of getting a book having a multiple 8 or a prime number on its cover page?

A)  \[\frac{1}{5}\]                         

B)  \[\frac{2}{5}\]

C)  \[\frac{3}{80}\]                        

D)  \[\frac{1}{10}\]

E)  None of these