x magic +1
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Originally Posted by Yanman.be
2 times blood magic +1 ?
that would be um 44% chance of getting 1 extra blood magic btw jos het ei pwns |
First test: you have a 20% chance to get +1 (1st success) and an 80% chance not to (1st failure).
Second test: you have a 20% chance to get +1 (2nd success) and an 80% chance not to (2nd failure).
Chance to get +2: .20 (1st success) * .20 (2nd success) = .04 = 4% chance
The only way to get this is by succeeding both tests.
Chance to get +1: .20 (1st success) * .80 (2nd failure) + .80 (1st failure) * .20 (2nd success) = .32 = 32% chance
To just get a +1, you either succeed the first test and fail the second, or fail the first and succeed the second.
Chance to get +0: .80 (1st failure) * .80 (2nd failure) = .64 = 64% chance
Of course, you could just fail both and get nothing.
