question_answer

The probability that a bulb produced by a factory will fuse after 150 days of use is 0.05. What is the probability that out of 5 such bulbs none will fuse after 150 days of use

A)  \[1-\,\,{{\left( \frac{19}{20} \right)}^{5}}\]                   

B)  \[{{\left( \frac{19}{20} \right)}^{5}}\]

C)  \[{{\left( \frac{3}{4} \right)}^{5}}\]                  

D)  \[90\,\,{{\left( \frac{1}{4} \right)}^{5}}\]

E)  None of these