A FedEx driver has 6 packages to deliver A How many differen

A FedEx driver has 6 packages to deliver.

A. How many different routes can he take to deliver the 6 packages?

B. It\'s the end of the day and he can only has time to make 3 or more deliveries. How many different routes are possible to deliver 3 of the 6 packages?

Solution

a)

There are 6! = 720 ways. [ANSWER]

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b)

There are 6P3 = 120 ways. [ANSWER]