#868 · Combinatorics · Counting
Shelving volumes of works
There are two works each consisting of three volumes and two works each consisting of two volumes, making a total of ten books. In how many ways can the books be placed on a shelf so that the volumes belonging to the same work remain together?
H. S. Hall & S. R. Knight, Higher Algebra (1891) · Ch. XI. Permutations and Combinations, Examples XI.a, No. 28
Stuck? A gentle nudge
Your answer
Loading the math keyboard…
Type naturally — sqrt, pi, / and ^ become notation. Any equivalent form is accepted. Press Enter to check.