[질문] 세개주사위를던져쓸때 합이 5또는7이될경우의수

5가될경우(1,1,3)(1,2,2)(1,3,1),(2,1,2)(2,2,1)(3,1,1,)입니다.7이될경우(1,1,5)(1,2,4)(1,3,3)(1,4,2),(1,5,1)(2,1,4)(2,2,3)(2,3,2),(2,4,1) (3,1,3)(3,2,2)