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Arithmetic Series - Problem 8

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Teacher/Instructor Alissa Fong
Alissa Fong

MA, Stanford University
Teaching in the San Francisco Bay Area

Alissa is currently a teacher in the San Francisco Bay Area and Brightstorm users love her clear, concise explanations of tough concepts

You can use what you know about arithmetic series to answer word problems about how many objects are in a stacked formation - often presented as cans in a supermarket display. If you know how many cans are in the top row (first term, or a 1), how many are added in each successive row (the difference d) and how many rows there are total, you could find the total. Calculate your final term- that is- the last row, and use the formula for an arithmetic series to find the total number of objects in the stack.

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