math for elementry school teacher

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Step 1st: 1 Box
Step 2nd: 3 Boxes
Step 3rd: 6 Boxes
How many boxes in the 354th version?
How many in the nth version?

  • math for elementry school teacher -

    looks like the nth step has n(n+1)/2 boxes.
    what's 354*355/2?

    dunno nothin' 'bout no versions.

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