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  4. Number of ways in which 4 students can sit in 7 chair in a row, if there is no empty chair between any two students, is

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Q. Number of ways in which 4 students can sit in 7 chair in a row, if there is no empty chair between any two students, is

Permutations and Combinations

Solution:

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All four must sit consecutive i.e., in 4 ways
Hence total $= 4 ยท 4! = 96.$