Suppose that a classroom has 4 light bulbs The probability t

Suppose that a classroom has 4 light bulbs. The probability that each individual light bulbs work is 0.6. Suppose that each light bulb works independently of the other light bulbs. What is the probability that none of the 4 light bulbs work?

Solution

Probabiltiy that bulb lights=0.6

probability that bulb doesnot light=1-0.6=0.4

P(None works)=0.4*0.4*0.4*0.4=0.0256