This math question meant for 7-year-olds has everyone stumped Ifeadi C. 03:56 Mashable, Zero Tech Blog Share this Share on FacebookTweet on TwitterPlus on Google+ Related PostsNew Sprayable Antennas Could Mean Thinner, Lighter Mobile Devices25 Best Android Tips to Make Your Phone More UsefulSurface Pro, Surface Laptop Updates Leak, Still Lack USB-CAlan partners with Kry’s Livi for telemedicine appointmentsUber's Jump e-scooters are here, and they look just like Jump bikes'Venom' review round-up: Critics agree Sony flick is dull, unimaginative poison