Inactive Tutor answered 10/11/20
7 birds. We can choose 3 of them in 7 C 3 ways
If a parrot is one of them, and we pick a canary, there are only 5 ways to do this (we can pick the 3rd bird in 5 ways)
So probability is 5 / (7 C 4)
Hayley B.
asked 10/11/20Three birds are randomly removed from a bird cage that contains a canary, a parrot, a robin, a cardinal, a blue jay, a hummingbird, and a sparrow. Find P(canary, given parrot)
Inactive Tutor answered 10/11/20
7 birds. We can choose 3 of them in 7 C 3 ways
If a parrot is one of them, and we pick a canary, there are only 5 ways to do this (we can pick the 3rd bird in 5 ways)
So probability is 5 / (7 C 4)
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Inactive Tutor
Sorry 5 / (7 C 3)10/11/20