Math, asked by SaranshAgarwal, 1 year ago

in how many ways can 20 books be arranged on a shelf so that a particular pair of books shall not come together?

Answers

Answered by roxsayan

in 18*19! ways it can be arranged

Answered by smriti3131

Step-by-step explanation:

The total number of ways to arrange these 20 books is 20!. If B1 and B2 are together, think of them as one book. So there are now 19 books. The total number of ways to arrange these 19 books is 19

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