statistics - Binomial Coefficients -- Combination -
i have tried figure out , cannot. professor gave reply of 13,536 not see way in got answer. help appreciated.
a classroom has 2 rows of seats. front end row contains 8 seats , row contains 10 seats. how many ways there seat 15 students if grouping of 4 or them refuses sit down in front end row?
statistics combinations permutation binomial-coefficients
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