- #1
Ownaginatious
- 38
- 0
So here is the problem:
Now what seems logical to me is first choose 1 of the 10 non-performing and then choose 4 from the remaining 139 chips.
What is wrong with my logic here? I don't get the answer the book gets (130,721,752), and instead get 148, 916, 260.
A lot of 140 semiconductor chips is inspected by choosing a sample of five chips. Assume 10 of the chips do not conform to customer requirements.
...
c) How many samples of five contain at least one non-conforming chip?
Now what seems logical to me is first choose 1 of the 10 non-performing and then choose 4 from the remaining 139 chips.
What is wrong with my logic here? I don't get the answer the book gets (130,721,752), and instead get 148, 916, 260.