Personal Comment: Think, try, and answer.
Balance Scale Enigma!
What we know: You have a balance scale.
Enigma: What is the minimum number of weights that can be used to weigh any number of pounds from 1 to 40? What are the weights?
Solution: 4 weights. Various combinations of the weights: 1, 3, 9, & 27 lbs.
See who got this right
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