1,甲进两球获胜要求甲投中2球,乙最多1球
P=(2/3)^2*[1-(1/2)^2]=1/3
2是平局的概率是(2/3)*(2/3)*(1/2)*(1/2)+(2/3)*(1/3)*(1/2)*(1/2)+(1/3)*(1/3)*(1/2)*(1/2)=7/36
所以不是平局的概率是1-7/36==29/36
1,甲进两球获胜要求甲投中2球,乙最多1球
P=(2/3)^2*[1-(1/2)^2]=1/3
2是平局的概率是(2/3)*(2/3)*(1/2)*(1/2)+(2/3)*(1/3)*(1/2)*(1/2)+(1/3)*(1/3)*(1/2)*(1/2)=7/36
所以不是平局的概率是1-7/36==29/36