- #1

leright

- 1,316

- 19

A shipment of 12 TVs contains 3 defective sets. In how many ways can a hotel purchase 5 of these sets and receive at least 2 of the defective sets?

Thanks.

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- Thread starter leright
- Start date

- #1

leright

- 1,316

- 19

A shipment of 12 TVs contains 3 defective sets. In how many ways can a hotel purchase 5 of these sets and receive at least 2 of the defective sets?

Thanks.

- #2

Muzza

- 695

- 0

{all three defective TVs} [tex]\cup[/tex] {a set containing precisely two working TVs}, or

{a set containing precisely two defective TVs} [tex]\cup[/tex] {a set containing precisely three working TVs}.

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