Suppose a network has 40 computers of which 5 fail. (a) how many possibilities are there for the five that fail? (b) suppose that 3 of the computers in the network have a copy of a particular file. how many sets of failures wipe out all the copies of the file? that is, how many 5-subsets contain the three computers that have the file?

a) 658008, b) 666.

Step-by-step explanation:

Since we have given that

Total number of computers = 40

Number of failed computers = 5

(a) How many possibilities are there for the five that fail?

We will use "Combination" to find all 5 failed.

(b) Suppose that 3 of the computers in the network have a copy of a particular file. How many sets of failures wipe out all the copies of the file?

So, number of computers failed left = 5-3 =2

Total number of computers = 40-3=37

So, the number of set of failures wipe out would be

Hence, a) 658008, b) 666.

justin bieber ml.

answer: the answer is fre sha voca do

step-by-step explanation: