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- The second grade of mathematical balance problem
The second grade of mathematical balance problem
With the five weights 1, 2, 4, 8, 16, we can weigh all integer grams within 3 1. Because this is an integer power of 2, for example:
3= 1+2
5= 1+4
6=2+4
7+ 1+2+4
9= 1+8
……
12=4+8
……
3 1= 1+2+4+8+ 16
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