Quite some time ago, when I answered a question about whether Colorado had ever issued a license plate with all zeroes, my response was a little confusing in some areas. So I found another source at the Department of Revenue, and here's what I learned:

From 1913, the first year Colorado issued license plates, to 1956, standard plates bore only numbers. Since then there have been various combinations of letters and numbers leading up to the current system, instituted in June 1999, of three letters followed by three numbers.

At no time has the state issued all-zero plates, says Department of Revenue spokesman Mark Couch. That configuration was reserved for testing the machinery that makes the plates.

Before 1913, cities issued the numbers, and motorists made their own plates.

It's possible to get only numbers on a vanity plate, but it must have at least five numbers and no more than seven. And no, you can't get an all-zero vanity plate, Couch said.

For more license-plate lore, see www.revenue. state.co.us/mv_dir/ wrap.asp?incl=registrations/history.

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Is there a resource where I can find a math tutor for my 9-year-old grandson? - Barbara

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