Advertisements
Advertisements
Question
In how many ways can 5 different books be arranged on a shelf if 2 books are always together
Sum
Advertisements
Solution
2 books are together
Say books are B1, B2, B3, B4, B5 are to be arranged with B1, B2 together.
Required number = 2 × 4!
= 48
shaalaa.com
Is there an error in this question or solution?
Chapter 3: Permutations and Combination - Exercise 3.3 [Page 55]
