**jp@lanl.ARPA** (06/19/85)

Recently I noticed that the license number on my truck had a rather remarkable property that made it easy to remember. The license number for trucks in New Mexico consists of two letters followed by 4 digits (0 - 9). My license number is AN wxyz, where w,x,y, and z are single digit integers (base 10). I offer the following clues to assist you in determining my license number. 1. One adjacent pair of digits taken as a two digit integer is twice the other adjacent pair. 2. One of the adjacent pair is twice another integer ij where i and j are single digit integers not in the set {w,x,y,z} 3. Three adjacent digits form a sequence each differing by one from its predecessor. e.g. 123 4. None of the digits w,x,y,z are the same. What is my license number? Jim Potter jp@lanl.arpa

**jp@lanl.ARPA** (06/20/85)

I have reformulated the clues a bit. > > Recently I noticed that the license number on my truck had a rather > remarkable property that made it easy to remember. The license number > for trucks in New Mexico consists of two letters followed by 4 digits > (0 - 9). My license number is AN wxyz, where w,x,y, and z are single digit > integers (base 10). I offer the following clues to assist you in > determining my license number. > > 1. One adjacent pair of digits taken as a two digit integer is twice > the other adjacent pair. > (This is the revised clue.) 2. At least two of the digits are odd. > > 3. Three adjacent digits form a sequence each differing by one from its > predecessor. e.g. 123 > > 4. None of the digits w,x,y,z are the same. > > What is my license number? Jim Potter jp@lanl.arpa

**lhl@lanl.ARPA** (06/20/85)

> > > > I have reformulated the clues a bit. > > > > Recently I noticed that the license number on my truck had a rather > > remarkable property that made it easy to remember. > > Jim Potter jp@lanl.arpa > > I suppose your number is 3876, but (since you didn't exclude zero as a digit) 3216 must come to mind once in a while.

**jp@lanl.ARPA** (06/25/85)

I have reformulated the clues one last time. > > Recently I noticed that the license number on my truck had a rather > > remarkable property that made it easy to remember. The license number > > for trucks in New Mexico consists of two letters followed by 4 digits > > (0 - 9). My license number is AN wxyz, where w,x,y, and z are single digit > > integers (base 10). I offer the following clues to assist you in > > determining my license number. > > > > 1. One adjacent pair of digits taken as a two digit integer is twice > > the other adjacent pair. > > > > 2. Three adjacent digits form a sequence each differing by one from its > > predecessor. e.g. 123 > > 3. The number is even modulo 9 > > What is my license number? > All of this goes to prove that it ain't easy to make a puzzle. Thanks to all who pointed out my oversights and redundancies. > Jim Potter jp@lanl.arpa > >