Question 1163208
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We have seen this question before, and the answer is the same: the problem is nonsense.<br>
My guess is that whoever wrote the problem doesn't know what "vice versa" means.<br>
"The two math books should be immediately followed by the 2 history books and vice versa."<br>
That means 2 math books should be followed the 2 history books, and the 2 history books should be followed by 2 math books.  That requires 4 math books (at least); but there are only 3.<br>