15-10-2010, 02:35 PM
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#17
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ربي قل لامنيآتي كوني }.,~
تاريخ التسجيل: Sep 2010
التخصص: IT (=
نوع الدراسة: إنتظام
المستوى: الرابع
الجنس: أنثى
المشاركات: 65
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رد: واجب الستات
c. The novels must be together but the other books can be arranged in any order
The number of ways to arrange the novels is given by 3! = 6 and the other three
books can be arranged in 3! ways with the blocks of novels in any of the four positions in
between giving
4 .(3!) . (3!) = 144
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