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OpenStudy (anonymous):
The manager of a four-screen movie theater is deciding which of 12 available movies to show. The screens are in rooms with different seating capacities. How many ways can he show four different movies on the screens?
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OpenStudy (anonymous):
nCr=n!/r!*(n-r)! here n=12 nd r=4 its combination problm...
OpenStudy (anonymous):
thanks
OpenStudy (anonymous):
yw
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