A retail company has hired 10 new employees and wants to send them to work in its stores. In how many ways can this be done (a) if the company has 2 stores?

(b) if the company has 2 stores and wants to send 5 new employees to each of them?

(c) if the company has one main store, where it wants to send 6 new employees, and 2 local stores, to each of which it wants to send 2 new employees?

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