In how many ways can 10 books be arranged in a shelf so that a particular pair of books shall be always together?
Lollipop38085:
OK. But what do you mean by a particular pair
I had a question paper i got that question from that question paper
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you can keep books in 3or4 ways 1. that you like keep that books at one of shelf and other on other side. 2. you keep with your own wish. 3.you can keep them in sliding on each other . 4.keep them in vertical way. 5.in horizontal way
srry wrong answer
it is the question of
permutation and combination
le bhai tu kya yaad krega!!
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