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johncena1001
24.06.2021 •
Mathematics
Suppose that 60 batteries are shipped to an auto parts store, and that 5 of those are defective. A fleet manager then buys 6 of the batteries from the store. In how many ways can at least 4 defective batteries be included in the purchase
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Ответ:
In 8910 ways can at least 4 defective batteries be included in the purchase
Step-by-step explanation:
The order in which the batteries are there is not important, which means that the combinations formula is used to solve this question.
Combinations formula:
In this question:
4 defective:
4 defective from a set of 5 and 2 non-defective from a set of 60 - 5 = 55. So
5 defective:
5 defective from a set of 5 and 1 non-defective from a set of 60 - 5 = 55. So
In how many ways can at least 4 defective batteries be included in the purchase?
In 8910 ways can at least 4 defective batteries be included in the purchase
Ответ:
11+(-1/.3333)=x
x=-3