[wsj-responsive-image P="//si.wsj.net/public/resources/images/BN-TT178_MATH_P_20170606161705.jpg" J="//si.wsj.net/public/resources/images/BN-TT178_MATH_J_20170606161705.jpg" M="//si.wsj.net/public/resources/images/BN-TT178_MATH_M_20170606161705.jpg" caption="" credit="Luci Gutierrez" placement="Inline" suppressEnlarge="true" ] This week, Coach Taylor has chosen two problems in honor of the upcoming Flag Day. Hard States Whenever the number of states in the U.S. has changed, the arrangement of white stars on the blue field of the flag has had to change as well. […]