Can anyone help me out, quickly?
b i think
P (I or O) = P(I) + P(O) - P(I and O)
The probability of I and O = 0 (since the arrow can't land two places at once)...so we have..
P (I or O) = P(I) + P(O) =
0.185 + 0.306 = 0.491
everything is calculating on 100 % there is only one thing
9.2% bull s eye
18.5% inner ring