98! ends with 22 zeroes. What is the remainder when 10^22 us divided by 101?
1/101 = 99/9999 = .009900990099...
so 10^22/101=99009900990099009900.9900990099..
that decimal representing 100/101
Im not sure how to save much work from here but you could now leave out a total of 22 twos and all the fives as factors in doing what Joshua did.

Posted by Jer
on 20110902 14:56:06 