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There are 9 children - 6 girls and 3 boys - a kindergarten classroom having 3...

There are 9 children - 6 girls and 3 boys - a kindergarten classroom having 3 rows of chairs, 3 chairs in each row. (a) How many ways can the children be seated in the chairs? (b) How many ways can the children be seated with all the boys seated together in a row?

Math   Statistics-And-Probability   
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