Your job is to sort and sack marbles for sale. a bag contains 55 marbles, some red and some green. if there are 11 red marbles, what is the ratio of red to green marbles? a)1: 4 b)1: 5 c)4: 1 d)5: 1

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