This blog focuses on GREAT, FUN PUZZLE APPS for the ipad, iphone and ipod. If you are creating your own puzzle app and want it reviewed, contact me at LinkedIn. Tom Cutrofello
34 and 35! I wrote a program to calculate this after reading the puzzle, thinking the answers would be much higher. Needless to say, I had fun solving it!
This is also true of 160, 161 167, 168223, 224293, 294412, 413419, 420And many, many more
Another interesting finding is that the first occurrence where BOTH integers have a sum of digits that's divisible by 7 happens at (69999,70000) and not again until (159999, 160000)
In fact, in the first 1 million integers, there are 20411 sequential integer pairs that meet the criteria of the initial puzzle!
In the first BILLION integers? 20,408,136 sequential pairs meet the criteria!