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Algebra

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What is the difference between the sum of the first 200 positive multiples of three and the sum of the first 200 positive even integers?

  • Algebra -

    3*(2+3+4+...)-2(2+3+4+...)=2+3+4+....

    so what is the sum of those 200 numbers?
    PS, there can be some dispute on what positive multiple means (does in inclued times 1?)

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