SOLUTION: in how many ways can 8 people be seated in a row such that two brothers must not sit next to each other?

Question 883337: in how many ways can 8 people be seated in a row such that two brothers must not sit next to each other?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
If you disregard the problem of the
brothers not sitting together, there are
ways
From this you can subtract all the ways
the brothers can be seated together
------------------------------------
B B * * * * * *
* B B * * * * *
* * B B * * * *
* * * B B * * *
* * * * B B * *
* * * * * B B *
* * * * * * B B
There are ways they can sit together
so, the answer is
You might get a 2nd opinion, but
that's my guess

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