This road sign is on eastbound US Highway-52 in Joliet, Illinois.

The road sign says...

+--------------------+ | Illinois Hwy-7 3 | | Kankakee 40 | +--------------------+the numbers are: 3 7 40 rs42Eval: 40 + sqrt(7 - 3) = 42 * 42 is the "Answer to Life, the Universe, and Everything" off-by-one rsCardinalityEval: 40 / (3 + 7) = 3+1 off-by-one rsCardinalityEval: 40 % 7 - 3 = 3-1 off-by-one rsCardinalityEval: sqrt(40 - (7 - 3)!) = 3+1 off-by-one rsCardinalityEval: 3! * 7 - 40 = 3-1 off-by-one rsCardinalityEval: cuberoot(40 + (7 - 3)!) = 3+1 off-by-one rsCardinalityEval: sqrt(sqrt(40 - (7 - 3)!)) = 3-1 * There are three numbers in this road sign. off-by-one rsStateEval: 40_{7}- 3! = 21+1 * Illinois was the 21st state admitted to the Union. off-by-one rs37Eval: 40 - 7 + 3 = 37-1 * Whyrs37Eval? 37 Heaven @ http://thirty-seven.org off-by-one rsHwyEval: 3! + 7 + 40 = 52+1 * This road sign is on US Hwy-52. off-by-one BARSfunc math: 3 + 7 = spf(40)-1 * spf(n) = the sum of the prime factors of n domain: n must be a composite number * 40 is composite; spf(40) = 2+2+2+5 = 11

**Creator:** Gerald Thurman
[gthurman@gmail.com]

**Created:** 29 March 2016 (posted 30 March 2016)

This work is licensed under a Creative Commons Attribution 3.0 United States License.