A study involving one million solved puzzles on the Calcudoku online maths puzzle website has found some interesting things about the people who have completed puzzles. It turns out that out of the million completed puzzles, which were against the clock, Chrome users were the smartest, followed by Firefox and then Internet Explorer. However, another result showed that Chrome users solved the puzzles fastest, while Internet Explorer users gave up the most!
Here is something to back up the claims of the study;
These differences were found to be statistically significant (p = 5%). Based on the fact that Chrome users solve Calcudoku number puzzles the fastest, and that IE users give up on solving them the most, it appears that Chrome users have the highest numerical intelligence, followed by Firefox users, then by Internet Explorer users.