Originally Posted by makinaz

That's not how math works.

Those actually are the odds:

Chances of getting at least one 5 or 6 star in 11 pulls:
1 - (1 - .005 - .06) ^ 11 = .52 or 52%

Chances of getting at least one 6 star in 11 pulls:
1 - (1 - .005) ^ 11 = .054 or 5.4%