Which answer shows all the prime factors for 60?

2 • 2 • 15

4 • 3 • 5

4 • 15

2 • 2 • 3 • 5

The computer that controls a bank's automatic teller machine crashes a mean of 0.6 times per day. what is the probability that, in any seven-day week, the computer will crash less than 5 times? round your answer to four decimal places