Covert 0 (Zero)

Can you convert the number zero(0) into a positive number using just one mathematical operator ?




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You have two rectangular wires.

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By using all numbers, i.e. 123456789 and subtraction/addition, operators number 100 can be formed in many ways.
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You are mixing a mixture of cement and Sand with five gallons of water. You have a garden hose giving you all the water you need. The problem is that you only have a four-gallon bucket and a seven-gallon bucket and neither has graduation marks. Find a method to measure five gallons.

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Gambling

In Canada, a mathematical puzzle must be solved in order to win the lottery to classify it as a “game of skill” not gambling.