i ran some numbers for myself for my no upgrade point challenge (see my other thread), and i thought i’d share (link below).

first i wanted to know how many pieces i would need to complete pink floyd, bumuming drops are random (important).

well, for the first piece i’d obviously need exactly one piece.

for the second, i would have a 49/50 chance of a new piece dropping, and i’d expect (on average) to take 50/49 or 1.02 drops.

for the third, 50/48, and so on til the last piece which has a 1/50 chance to drop and would take 50 pieces.

adding those numbers i arrive at an expected total of 225 pieces.

on sheet 1 you can see how many pieces you need to collect (column B) to get (column A) different pieces of pink floyd.

turns out that if you have 45/50 pieces, you’re only half way there.

on sheet two you can find the expected numbers of drops (column B) you need to collect files of other sizes (column A).

edit: note that these are “expected values”, which means that on average, you will need as many files as my sheets show.

nevertheless, you can be lucky and need much less, or be unlucky and need much more.

anyway, here’s the link.