THE COUNTERFEIT QUARTERS RAY: This puzzler came to us from Clive Woods. Clive writes: “I work in the Anti-Counterfeit Department of the U.S. Treasury. The other day, my assistant was sent 100 U.S. quarters, and he found that 10 of them were bo-o-o-o-gus. “He sorted the 10 bogus coins into one pile, an...