
The riddle of Leonardo da Vinci’s lock: can you unlock it? Here is the solution
You found Leonardo da Vinci’s secret trunk, but to unlock the lock you have to solve a riddle insert 3 numbers: one of 4 digitsone of 7 digits and one of 10 digits. The case seems impossible, but you have a treasure map in which the first two numbers are indicated, 1210 and 3211000, two so -called “autobiographical” numbers: what ...








