>>12628854With a standard 8 digit number, you need to convert it to binary with log2. That gives us 8^2 = 64 digits. Then you take log10 of that to convert back to base 10. Lastly we have overcounted due to trips, quads, etc. So you need to multiply your final result by 1/2 to undo the double counting. This means the final probability for dubs is about (1- ans) ~ 10%