A geometric sequence begins 12, 3, 3/4 , 3 /16 , 3/ 64 , . . . .(a) Find the common ratio r for this sequence.(b) Find a formula for the nth term an of the sequence.(c) Find the tenth term of the sequence.

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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.