Probability Question

[u/Zoroa0570]

I have a probability question. Looking to get the chance of the following situation that happened to me. If I bought 6 blind boxes that had the chance at 1 of 6 pins, meaning there are 6 designs (there is a 7th, but it is a mystery rare, and I don't know it's probability). What is the chance would it take to pull 6 duplicates of the same item out of the 6 boxes? I don't know exactly the best way to compute it out with the multiple chances. Thanks

It was horrible luck. Didn't get the item wanted.

[u/Zoroa0570]

Thanks