On Sep 23, 2005, at 7:56 AM, Dave Burt wrote:

>> "What is fifty times 'a', if 'a' is three?" #=> 150
>>
>> Write a Captcha system that uses english-based math questions to
>> distinguish
>> humans from bots.
>>
>
> Solutions to the past quiz entitled English Numerals may be handy  
> for this
> one:
>
> http://rubyquiz.com/quiz25.html

The quiz says that if you read a bit farther down.  ;)

James Edward Gray II