把钟用60数字表达,时用X,分用Y,(X,Y)表[X/5]时Y分.(X,Y)与(Y,X)合理就是
(X-[X/5]*5)*12<= Y <(X-[X/5]*5+1)*12 和 (Y-[Y/5]*5)*12<= X <(Y-[Y/5]*5+1)*12
有144个解.如(28,27),...(28,32)...即5时27分,...5时32分...是"AMBIGUOUS".
余龄过孔子寿,难免有错,望指正.