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What is the sum of the numbers 31 through 59?

Updated: 8/21/2019
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7y ago

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Which is n/2(2a + (n - 1)d) where a is the first term, d is the difference between the terms and n is how many terms there are.

a = 31

d = 1

n = 29

29/2(62 + 28) = 29 x 45 = 1305

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7y ago
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7y ago

You can use the formula for an arithmetic series for this type of problem.

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Q: What is the sum of the numbers 31 through 59?
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