In a college of 300 students, every student reads 5 newspapers and every newspaper is…
Mathematics · JEE Advanced · NTA Exams — Permutations and Combinations
In a college of 300 students, every student reads 5 newspapers and every newspaper is read by 60 students. The number of newspaper is
- at least 30
- at most 20
- exactly 25
- none of these
Answer
(C) exactly 25
Sign up free on Edukali to view the step-by-step worked solution and practice thousands of similar questions.
Related practice questions
- There are 12 books on Algebra and Calculus in our library, the books of the same subject being different. If…
- Every one of the 10 available lamps can be switched on to illuminate certain Hall. The total number of ways…
- If P (n, n) denotes the number of permutations of n different things taken all at a time then P (n, n) is…
- There are n concurrent lines and another line parallel to one of them. The number of different triangles that…
- Let S = 1, 2, 3, 4 . The total number of unordered pairs of disjoint subsets of S is equal to
- The continued product, 2 . 6 . 10 . 14 ........ to n factors is equal to :
- The number of ways in which we can choose 3 squares of unit area on a chess board such that one of the…
- The value of 47 C 4 + _ j=1 ^ 5 ^ (52-j) C_ 3 is equal to
More Permutations and Combinations questions · Browse all practice questions