What are the next 5 digits in the following series?
10101000101000101000
Without looking at the solution I would count up from one. For every number that is not prime I would concatonate 10 to the right end of the string. For every number that is prime I would concatonate 1000 to the right end of the string.
10 10 1000 10 1000 10 1000 10 10 10 1000 10 1000
Usining this method the next 5 digits would be 10101.
OK just looked at the solution. Seems I had the right idea but not the right answer.
Edited on January 20, 2004, 10:53 am
Not looking at the solution
