题目

A telephone number has the form ABC-DEF-GHIJ,where each letter represents a different digit,the digits in each part of the number are in decueasing order;that is,A>B>C,D>E>F,and G>H>I>J.Further more D,E and F are consecutive even digits;G,H,I and J are consecutive odd digits;and A+B+C=9,what is 一个电话号码是如下形式：ABC-DEF-GHIJ.其中每个字母代表一个不同的数字,每个部分的数字是逐渐变小排列的,即A>B>C,D>E>F,G>H>I>J.并且,D,E,F是连续的偶数,G,H,I,J是连续的奇数,A+B+C=9,求A.

提问时间：2020-10-19

答案

A=8,B=1,C=0
D=6,E=4,F=2
G=9,H=7,I=5,J=3