Here is a cool sequence.

1,10,101,1020,10301,______,_______...

What numbers go in the two blanks?

I just read Ravi Raja's solution and that is very smart.
My solution I came up with was more simple.
Writing each number on a line I saw:
1
10
101
1020
10301

My theory was that the first number stayed as a 1, the next one stayed a 0, the next line, always went up by 1 digit, the next line stayed as 0, the next line startd up again with 1, so my way to continue it was:

104020
1050301

I still say it works. :) Even if it is less mathematical.

Posted by Cara on 2003-05-08 09:58:53