Question

In a network of 39 computers, 4 have a copy of a particularly critical file to sustain an organization's regular operations. Suppose that 8 computers at random fail. What is the probability that all 4 computers with the critical file fail in this incident? (Round to four decimal places.)

Answer 1

The answer is 34 because 39 x 4 equals 156 - 8= 148 divided by 4 equals 34