Einsteins Problem: 98% of the people in the world couldn't solve it
davar.netEuropean Sudoku.
...And where did this 98% figure come from?
Additionally, 98% of people in 1940? What % might it be today?
European Sudoku.
...And where did this 98% figure come from?
Additionally, 98% of people in 1940? What % might it be today?