Robert wants to arrange the books for Statistics, Calculus, Geometry, Algebra, and Trigonometry on a shelf. In how many arrangements can he keep them on the shelf such that the Algebra and Trigonometry books are not together?
24
48
72
120

Question

Robert wants to arrange the books for Statistics, Calculus, Geometry, Algebra, and Trigonometry on a shelf. In how many arrangements can he keep them on the shelf such that the Algebra and Trigonometry books are not together?
24
48
72
120

dan815 · Answer

we can look at how many ways they are together and subtract it from the total

dan815 · Answer

Then can be together i 2 ways, either Algebra,Trig or Trig,Algebra
Think of them as 1 book and continue

dan815 · Answer

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