what is the total number of diffreent seven letter agreements that can be formed usinng the letters "MILLION"? possible answers: 30, 210, 1260, 2520.
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There are 7 letters which can be arranged in 7! ways. But, we have repeats. There are 2 L's and 2 I's So, we divide by the number of repeats. $\displaystyle \frac{7!}{2!2!}=\frac{5040}{4}$
Originally Posted by lional what is the total number of diffreent seven letter agreements that can be formed usinng the letters "MILLION"? possible answers: 30, 210, 1260, 2520. There are 7 letters in million The letters "I" and "L" both appear twice $\displaystyle \frac{7!}{2!\cdot 2!}=\frac{5040}{4}=1260$
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