Welcome back to Popular Mechanics' Riddle of the Week ... On the table are seven lit candles in a circle. You hear a deep voice echoing in your mind. It tells you that you must extinguish all ...

"There are five candles in a church," the riddle reads. "At night, three male thieves and two female thieves appear. Only males carry candles. How many candles are there?" We're not giving you any ...