what does 01 10 11 mean on Christians of survivor shirt mean

It means 1, 2, 3 in binary, a nerdy coding joke tied to Christian’s robot shirt on Survivor. The numbers 01, 10, and 11 are the binary forms of 1, 2, and 3 respectively.

In plain English, the shirt is basically saying “1-2-3” in a computer-style number system.