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How many rearrangements of the letters FACEBOOK have the two O's not together?

 Dec 27, 2021
 #1
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There are 7! arrangements where the two O's are togehter, so by complementary counting, the answer is (8! - 7!)/2 = 17640.

 Dec 27, 2021
 #2
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i think i agree with u

Guest Dec 27, 2021

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