1.

117. On a shelf there are 4 books on Economics, 3 books onManagement and 4 books on Statistics. In how manydifferent ways can the books be arranged so that thebooks on Economics are kept together?3)5040

Answer»

3)50400 because I don't no😂😂😂😂😂

Books on Economics are to be kept together.

Hence, we are to arrange 3 books on management, 4 books on Statistics and one book on Economics.

These can be arranged in 8! ways.

Again, 4 books on Economics can be arranged together in 4! ways.

Therefore, Total number of arrangements =8!×4!= 967680



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