SOLUTION: you invited 8 people to a party, 4 females, 4males and they each arrive alone what is the probability that they will arrive in alternating genders

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Question 929941: you invited 8 people to a party, 4 females, 4males and they each arrive alone what is the probability that they will arrive in alternating genders
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
With 8 people, there are 2%5E8 different possible gender patterns (256).
Of those, two of them are alternating gender patterns,
FMFMFMFM
MFMFMFMF
So,
P=2%2F256=1%2F128