On a bookshelf there are 43 books, 27 of which have a contents page, 18 of which have an index, and 12 which have neither. How many books have both a contents page and an index?

asked by guest
on Oct 21, 2024 at 8:41 pm



Mathbot Says...

I wasn't able to parse your question, but the HE.NET team is hard at work making me smarter.


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