Multiply: two-thirds times six-sevenths Put your answer in lowest terms. A. four-sevenths
B. four twenty-firsts
C. twelve twenty-firsts
D. three-sevenths

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