✔ 最佳答案
設 3 個數是 a > b > c ,
每次取出2個數相加 , 所得的和分別是
a + b = 20......(1)
a + c = 16......(2)
b + c = 14......(3)
(1) + (2) + (3) :
2(a + b + c) = 20 + 16 + 14
a + b + c = 25......(4)
(4) - (3) :
a = 25 - 14 = 11
(4) - (2) :
b = 25 - 16 = 9
(4) - (1) :
c = 25 - 20 = 5
這 3 個數是 5 , 9 , 11