An arithmetic sequence has first term P0 = 12 and common difference d = 3. (a) The number 309 is the Answer   th term of the sequence. (Hint: remember that P0 is the first term.)   (b)  Find the sum:  12 + 15 + 18 + ... + 309 =

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Sequence and Series

A sequence is defined as a collection of things. Series is defined to sum the things one by one in the sequence.  It was invented by German mathematician Carl Friedrich Gauss.