1. X=0
Y=4
X=2
Y=2
2. X=0
Y=6
X=1
Y=8
Такс.
12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57,60,63,66,69 и тд.
N=30
N(A)=6
P(A)=6/30=0,5