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In how many ways can 4 boys and 5 girls sit in a row if the boys and girls must alternate?
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2 votes
In how many ways can 4 boys and 5 girls sit in
a row if the boys and girls must alternate?

User Hongzhi WANG
by
8.1k points

1 Answer

4 votes
This is the only way 4 boy and 5 girls can sit in row row and alternating:

girl
boy
girl
boy
girl
boy
girl
boy
girl
User Teechap
by
7.6k points
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