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windsylph

  • 4 years ago

How many numbers must be selected from the set {1, 3, 5, 7, 9, 11, 13, 15} to guarantee that at least one pair of these numbers add up to 16?

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  1. ChrisS
    • 4 years ago
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    There are 4 pair of numbers that add up to 16. So you would need to choose at least 5 numbers to ensure that you got at least one of those pairs.

  2. windsylph
    • 4 years ago
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    thank you!

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