In grade school, you were probably constantly drilled on mathematics. Whether it be multiplication tables, simple addition, or complicated division, it was taught over and over again that quick math ...

The puzzle reads: 3 + 4 = 19 5 + 6 = 4 1 2 + 8 = 66 5 + 1 = ? At first glance, none of these make sense. According to standard math, 3 plus 4 is 7 — so how do we ...