There are 12 books in a shelf in a particular order.
All books are unique.
I decide to change their order such that no 2 books, adjacent earlier, are now adjacent.

For Example- Let the books be A,B,C,D.

A cannot come next to B, B cannot come next to A and C....and so on.

In how many ways can I arrange them?

×

Problem Loading...

Note Loading...

Set Loading...