21,22,23,24,25,26,27,28,29这九个数字彼此相加,使得算式无论横竖,两个斜对角都等于75.
问题描述：
21,22,23,24,25,26,27,28,29这九个数字彼此相加,使得算式无论横竖,两个斜对角都等于75.
答
21,22,23,24,25,26,27,28,29这九个数字彼此相加,使得算式无论横竖,两个斜对角都等于75.