The task is to generate the correct answer for a given math problem.

Q: Problem: a particular library has 75 books in a special collection , all of which were in the library at the beginning of the month . these book are occasionally loaned out through an inter - library program . if , by the end of the month , 80 percent of books that were loaned out are returned and there are 66 books in the special collection at that time , how many books of the special collection were loaned out during that month ?

A: 45
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Q: Problem: a man rows his boat 110 km downstream and 90 km upstream , taking 3 hours each time . find the speed of the stream ?

A: 3.5
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Q: Problem: 4 dices are thrown at the same time . what is the probability of getting only 2 dices showing the same face ?

A:
5 / 9
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