【用戶】SuperoStar
【年級】小二下
【評論內容】兩次點數和大於4機率(1,4-6),(2,3-6),(3,2-6),(4,1-6),(5,1-6),(5,1-6)p=(0.5*0.3)+(0.1+0.4)+(0.1*0.5)+(0.1*1)+(0.1*1)+(0.1*1) =0.15+0.04+0.05+0.3 =0.54
【用戶】SuperoStar
【年級】小二下
【評論內容】兩次點數和大於4機率(1,4-6),(2,3-6),(3,2-6),(4,1-6),(5,1-6),(5,1-6)p=(0.5*0.3)+(0.1+0.4)+(0.1*0.5)+(0.1*1)+(0.1*1)+(0.1*1) =0.15+0.04+0.05+0.3 =0.54