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OpenStudy (anonymous):

The first figure of the Sierpinski triangle has one shaded triangle. The second figure of the Sierpinski triangle has three shaded triangles. The third figure of the Sierpinski triangle has nine shaded triangles. Which summation represents the total number of shaded triangles in the first 15 figures?

OpenStudy (cecil_the_weasel):

This is an Algebra problem. Try posting it under Math or Algebra instead of Writing. You may get better answers that way. Sorry, I'd help you out but I'm a bit rusty on this topic. :)

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