SOLUTION: Two boys and two girls are lined up at random. what is the probability that the girls are separated if a girl is at an end?

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Question 1172382: Two boys and two girls are lined up at random. what is the probability that the girls are separated if a girl is at an end?
Answer by Edwin McCravy(20055) About Me  (Show Source):
You can put this solution on YOUR website!
Here are all the ways the 4 people could be lined up at random with a girl
at an end:

BBGG  <--girls not separated
BGBG  <--girls separated
GBBG  <--girls separated
GBGB  <--girls separated
GGBB  <--girls not separated

That's 3 ways out of 5, or a probability of 2/5.

Edwin