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    Question

    In how many ways can 17 members be seated in two lines

    with seating capacity of 9 and 8 members respectively? 1.     9! ×8! 2.     17 C9 ×17C8 3.     17 C9 4.     17 C8 ×5!
    A 1 Correct Answer Incorrect Answer
    B 2 Correct Answer Incorrect Answer
    C 3 Correct Answer Incorrect Answer
    D 4 Correct Answer Incorrect Answer

    Solution

    Total member = 17 Type of arrangement 9 member in 1 row first in 17 members =17C9 Sitting arrangement of eight members in the second row out of 17 members          =17C8 Total types = 17 C9 ×17C8

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