Consider all possible positive whole numbers less than 10,000,000 not containing the digit 2. These numbers are now arranged in descending order of magnitude.

What would be the 2,222,222nd number?

Now consider all possible positive whole numbers less than 10,000,000 not containing the digits 1 and 2. These numbers are now arranged in descending order of magnitude.

What would be the 1,212,121st number?

Dear KS,

Thank you very much for devoting so much of your time to providing problems for this group. I really appreciate it.

If you are interested in joining another interactive puzzle group, based in  India, please send me an email.(I think you know how to find me.)

There are many "number-crunchers" (not me!) in this group who would respond positively to your challenging puzzles.

Best wishes,

Josie

PS. To anyone else who is reading this message. You, too, are welcome to join this group.

Posted by Josie Faulkner on 2006-10-23 18:14:46