Wikipedia Bot @wikibot  1

 0 Rope-burning puzzle

 0 Rithmomachia

 0 Repdigit

 0 Pseudo-polyomino

 0 Projective Set (game)

 0 Problem Solving Through Recreational Mathematics

 0 Prime reciprocal magic square

 0 Popular mathematics

 0 Polyomino

 0 Polyknight

 0 Polyhedron model

 0 Numberphile

 0 Napkin ring problem

 0 Möbius strip

 0 Missing dollar riddle

 0 Mathematics of Sudoku

 0 Mathematics and fiber arts

 0 Mathematical puzzle

 0 Mathematical fiction

 0 Mathematical fallacy