How Many Histograms Can a Data Set Have? 11126
James S. Weber · American Mathematical Monthly · 2006
Part (a) also solved by S. Amghibech (Canada) (for legs of opposite parity), M. R. Avidon, M. Benito & O. Ciaurri & E. Fernandez (Spain), S. Y. Jeon (S. Korea) (for even legs), O. P. Lossers (Netherlands), J. S. Robertson & J. P. Robertson, Z. V?r?s (Hungary) (for primitive triangles), and the GHCQ Problem Solving Group (U. K.). Part (b) also solved in part by Benito-Ciaurri-Fernandez, Jeon, and the GHCQ Problem Solving Group.