Question

Three students try independently to solve a difficult math problem. Individually,
each is successful with probability 0.6. What is the probability that at least one is
successful?

Answer 1

Answer:  

p = 0.936

Step-by-step explanation:

At least one success could be any one or any two or all 3 are successful. The only thing it doesn't include is if all 3 fail.  

The answer therefore is p(at least 1 success) = 1 - p(all fail)  

p = 1 - (0.4^3) = 1 - 0.064.!

Hope it helped.!