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How do you find the sum of the first 20 terms of sequence
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How do you find the sum of the first 20 terms of sequence

User Ryan Giglio
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The formula to find the sum of the first n terms of our sequence is n divided by 2 times the sum of twice the beginning term, a, and the product of d, the common difference, and n minus 1. The n stands for the number of terms we are adding together.
User Tommo
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