chance of something happening is 100% - chance of it not happening.
chance that the 1st happens X chance that the 2nd happens.
given that the 1st on happened.
if chances for the 2nd are the same, no matter how the first turns out.
rolls of a die
independant multiplication rule
chance 1st happens X chance 2nd happens.
1st doesn't have to happen.
Two things cannot bot happen at the same time.
-coin landing on H and T at same time.
-getting a 6 and a odd number
chance that one thing OR another thing hapens is the SUM of the individual chances, IF the things are mutually exclusive.
chance of ACE 4/52
chance of QUEEN 4/52
chance of ACE or QUEEN 8/52.