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This can be acquired by dividing a term in the sequence by a previous term, for instance, dividing 12 (the second term) by 24 (the first), and we get , which is the common ratio.

If we know the first term of a geometric sequence, and the common ratio, it is simple enough to arrive at any nth term. Simply use the following formula:

where is the nth term we are looking for.

In this case, to get the eighth term, we use the formula, it gives us