Is there a formula to calculate the maximum load of a hollow profile?

Hello everyone, I have a question about the probability of my code. If I want to enter a specific 6-digit code, such as "403202," is the probability of entering this code randomly 0.0001%? I calculated that there are 1,000,000 possible combinations, and the probability for each of them should be 1 in 1,000,000. That works…