There are 235 books in a library. On Monday, 123 books are taken out. On Tuesday, 56 books are brought back. How many books are there now?
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Answer:
168 books are there now mark me brainlist
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Step-by-step explanation:
We want to distribute (a+2b+3c+d) books where one book has a copies, 2 books has b copies and 3 books has c copies.
∴ The number of distributions =
a!(b!)
2
(c!)
3
(a+2b+3c+d)!
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