小晶和小红玩掷骰子游戏,每人将一个各面分别标有1,2,3,4,5,6的正方体骰子掷一次,把两人掷得的点数相加,并约定:点数之和等于6,小晶赢;点数之和等于7.小红赢;点数之和是其它数,两人不分胜负.问他们两人谁获胜的概率大?请你用“画树状图”或“列表”的方法加以分析说明.
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