5 3 4 3 Math = love: the 5-4-3-2-1 challenge from will shortz and npr Challenge will math npr shortz puzzle naming 5-4-3-2-1: blast off! Math = Love: The 5-4-3-2-1 Challenge from Will Shortz and NPR Math = Love: The 5-4-3-2-1 Challenge from Will Shortz and NPR Check Details 5-4-3-2-1: Blast OFF! Check Details ← 5 3 2 2 5 4 1 2 → Share with friends Link copied