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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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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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Dec 18, 2018
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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?
Mathematics
college
Hongzhi WANG
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Hongzhi WANG
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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
Teechap
answered
Dec 22, 2018
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Teechap
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