Determine the correct answer of the given question
Question- How can you use discrete probability to calculate the probability of testing 5 devices such that all 5 end up being non defective RAIDs, given there are 20 defective RAIDs total of the original 100 RAID devices, what is the sample space in this problem, is this a ratio of combinations or permutations problem (explain why and show an example. Hint: Read section 6.5 and see Example 6.5.4 in your textbook.), and assuming there are exactly 5 defective RAIDs out of the 100 RAID devices,
Part 1- What is the probability of testing 20 RAIDs at random and finding all of them non defective?
I need help to find the probability of testing twenty RAIDs.