SOLUTION: In how many ways can three different math books and four different English books be arranged in a row if the books for each subject are placed together?
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Question 353234: In how many ways can three different math books and four different English books be arranged in a row if the books for each subject are placed together? Answer by sudhanshu_kmr(1152) (Show Source):
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Assume that 3 different books are single entity,
and 4 english books are single entity.
these these 2 entity can be arranged by 2! ways.
further, 3 different math books can be arranged by 3! ways in its own group
and similarly 4 math books can be arranged by 4! ways.
