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有10箱罐头袁这10箱罐头每箱都是20盒袁每盒有1斤遥但其中有一箱,每盒只有9两遥现在只有一个秤袁而且只准秤一次袁就要把有问题这箱罐头找出来遥你会怎么称呢钥
There are 10 boxes of canned food this 10 boxes of canned food each box is 20 boxes of Yuan each box has 1 kilogram away but there is a box of only 9 two boxes per box now only one scale Yuan and only a scale will have a problem Yuan Canned out the box how can you call it key