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Question: 11 suppose a class of 8 boys and 7 girls...

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11. Suppose a class of 8 boys and 7 girls are to attend a theatrical performance, and the teacher obtains 15 tickets (one for each student) in a row. How many ways are there to order the students under the following conditions? a The children are randomly assigned seats. b Boys and girls are alternated so that boys sit by girls and girls sit by boys. c All boys sit together, and all girls sit together.

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