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Little math problems September 2018
09-20-2018, 01:03 PM
Post: #3
RE: Little math problems September 2018
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White ball / black ball puzzle ...

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It does not matter what is drawn, black ball remaining is always odd
So, last ball remaining must be black
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RE: Little math problems September 2018 - Albert Chan - 09-20-2018 01:03 PM



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