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Lv 7
? asked in Science & MathematicsMathematics · 2 weeks ago

Which is the 583rd triangular number?

2 Answers

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  • la console
    Lv 7
    2 weeks ago
    Favorite Answer

    https://en.wikipedia.org/wiki/Triangular_number

    t(n) = n.(n + 1)/2 → in your case: n = 583

    t(583) = 583 * (583 + 1)/2

    t(583) = 170236

  • rotchm
    Lv 7
    2 weeks ago

    First, state here what is a triangular number. You should be able to find this on your own. And or give its formula.

    Then we will take it from there...

    Since someone cheated and plagiarize my answer, I will therefore continue.

    The n'th triangular # is n(n+1)/2. Replacing n by 583, and computing, gives your result.

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