Road Sign Math

This is the second mathematically significant sign from Massachusetts, found by previous winner David Slauenwhite. Petersham is a great town for hiking, fishing, cycling and hunting. Petersham is one of those places that harbors the America that is remembered in Norman Rockwell paintings. It apparently is also a great place for math lovers.

This sign is loaded with numbers, including some pretty large ones. Usually finding the math that unlocks the relationships in these loaded signs can be a little messy. That is not the case with this sign! The key is that noticing that 32 taken from 122 gives you a very nice number, 90. From there it’s relatively straight-forward to see the secret locked away here.

This sign is at the intersection of 32A and 122 in Massachusetts. The GPS coordinates are approximately N42 29 00.0 W72 11 41.0. See sign on map!