Question

张三李四王五各有25颗糖,他们举行中国象棋对抗赛

Answer 1

设对于张三来说,胜a局,平b局,负c局

则 a + b + c = 12

25 + 3a + b - 2c = 40

25 - 2a + b + 3c = 30

三式联立求解可得

a = 3

b = 8

c = 1

答：张三负了1局,胜了3局.