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When Dr. Ram arrives in his dispensary, he finds 12 patients waiting to see him. If he can see only one patients at a time,find the number of ways, he can schedule his patients if 3 leave in disgust before Dr. Ram gets around to seeing them.

Correct Answer: 79833600

Explanation:

There are 12 - 3 = 9 patients.They can be seen in  12 P 9  = 79833600 ways


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