Do you do math using forbidden numbers? Posted on December 2, 2022 by Chris Riley You might be surprised, but the lowly zero used to be forbidden. Share this:Click to email a link to a friend (Opens in new window)Click to print (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)MoreClick to share on Pocket (Opens in new window) Related