1. 给定等式 A B C D E 其中每个字母代表一个数字,且不同数字对应不 D F G 同字母。编程求出这些数字并且打出这个数字的 + D F G 算术计算竖式。 ─────── X Y Z D E Z = 45 –a-b-c-d-e-f-x-y;1+2+3+4….+9 = 45; 2. A、B、C、D、E五名学生有可能参加计算机竞赛,根据下列条件判断哪些 人参加了竞赛: (1)A参加时,B也参加; (2)B和C只有一个人参加; (3)C和D或者都参加,或者都不参加; (4)D和E中至少有
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