calculus

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antonio is thinking of four number from 1 through 9 with a sum of 18. find the number

  • calculus -

    3,4,5,6
    2,3,6,7
    2,4,5,7
    1,4,5,8
    1,2,7,8
    1,3,6,8
    1,4,5,8

    (4,4,5,5)?

  • calculus -

    The real question is, Is this calculus?

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