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प्रश्न
Evaluate each of the following:
6P6
उत्तर
\[{}^6 P_6 = \frac{6!}{(6 - 6)!} \]
\[ = \frac{6!}{0!} \]
\[ = \frac{6!}{1} (\text{Since} , 0! = 1) \]
\[ = 720\]
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