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A woman has 11 close friends. Find the number of ways she

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New post 14 Jul 2005, 01:44
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In my opinion answer is 504

We have 10c2 or 252 options if we ignore 1 out of the two fighting friends, and 252 ways for the other. so it makes 504. Though i m not that good in probabilty, but this is the solution i can think of. :~

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New post 26 Sep 2018, 14:34
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Re: A woman has 11 close friends. Find the number of ways she &nbs [#permalink] 26 Sep 2018, 14:34

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