Four Books, One Each in Chemistry, Physics, Biology and Mathematics, Are to Be Arranged in a Shelf. in How Many Ways Can this Be Done? - Mathematics
Four books, one each in Chemistry, Physics, Biology and Mathematics, are to be arranged in a shelf. In how many ways can this be done?
Here, all the four books are to be arranged on a shelf. This means that we have to find the number of arrangements of the books, taken all at a time.
Now, nPn = n!
Similarly, 4P4 = 4! = 24
Concept: Factorial N (N!) Permutations and Combinations
Is there an error in this question or solution?
why create a profile on Shaalaa.com?
1. Inform you about time table of exam.
2. Inform you about new question papers.
3. New video tutorials information.