primedepot333

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Suppose we have 4 books on Math, 5 books on English and 6 books on History. In how many ways you can put them on your bookshelf if

Suppose we have 4 books on Math, 5 books on English and 6 books on History. In how many ways you can put them on your bookshelf if you want
1) The first book is a math book.
2) All math books are at the beginning.
3) Math read more ..

primedepot333 Nov 4, 2020