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An average newspaper contains at least 9 pages and at most 46 pages. How many newspapers must be collected to be certain that at least two newspapers have the same number of pages?
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An average newspaper contains at least 9 pages and at most 46 pages. How many newspapers must be collected to be certain that at least two newspapers have the same number of pages?

User Raviabhiram
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1 Answer

2 votes
There are 46-9 + 1
= 38 possible lengths of the newspaper.
The number of possible combinations of 2 papers with different lengths
= 38*37/2 = 703
So after picking 703 the next pick must be one you’ve picked before
Answer is 704
User Bgse
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