There are n different books and p copies of each in a library. The number of ways in…
Mathematics · JEE Advanced · NTA Exams — Permutations and Combinations
There are n different books and p copies of each in a library. The number of ways in which one or more books can be selected is :
- pn + 1
- (p + 1)n – 1
- (p + 1)n – p
- pn
Answer
(B) (p + 1) n – 1
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