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Professor Grok writes an arithmetic sequence with three terms. Calamitous Clod creates a geometric sequence with common ratio 2 by adding 2 to the second term and 11 to the third term. What is the first term of their sequences?

 Sep 26, 2021
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Professor Grok's sequence is 8, 20, 32, so their first terms are 8.

 Sep 26, 2021

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