根据题意,将一枚骰子连投两次,设第一次得到的点数为x,第二次得到的点数为y, 则点(x,y)可能的情况有(1,1)(1,2)(1,3)(1,4)(1,5),(1,6), (2,1)(2,2)(2,3)(2,4)(2,5),(2,6), (3,1)(3,2)(3,3)(3,4)(3,5),(3,6), (4,1)(4,2)(4,3)(4,4)(4,5),(4,6), (5,1)(5,2)(5,3)(5,4)(5,5),(5,6), (6,1)(6,2)(6,3)(6,4)(6,5),(6,6),共36种情况;
约束条件表示的区域如图所示, 落在其区域的点满足0≤x≤2,0≤y≤3; 进而验证可得,落在其中点的为(1,1)(1,2); 故其概率为=; 故答案为:. |