Posted on December 31, 2011March 9, 2019 by Bard Math CircleProblem 6: Tetrahedral Numbers A tetrahedron (triangular pyramid) is made by piling up four layers of tennis balls. How many tennis balls are used in all? Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to email a link to a friend (Opens in new window)Click to print (Opens in new window)Like this:Like Loading... Related
