1-9位数,每个数只能用一次,(2位数)+(2位数)=(2位数)=(1位数)*(2位数)怎么解答
问题描述:
1-9位数,每个数只能用一次,(2位数)+(2位数)=(2位数)=(1位数)*(2位数)怎么解答
答
15 + 48 = 63 = 7 * 9
或者
18 + 45 = 63 = 7 * 9