Place one each of the digits 1—9 in the grid to make the sums work. We’ve put in

游客2023-10-13  2

问题 Place one each of the digits 1—9 in the grid to make the sums work. We’ve put in some of the numbers to start you off. Sums should be solved from left to right, or from top to bottom.

选项

答案 first line:3,2;second line:4,5;third line:7,6,1

解析 (第一行等式要成立,只能是11×2=22,而8+3=11,所以第一行为(8+3)×2=22;由此可推算竖行第二个等式为(3+9)÷6=2;此时还剩下数字1、4、5、7;竖行第一个等式要成立,只能是2×7=14,而8÷4=2,所以竖行第一个等式为(8÷4)×7=14;最后一个等式为竖排第三个等式(2×5)一1=9。)
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