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If two consecutive terms of a geometric sequence are 18 and 9 in that order what is the common ratio of the sequence ?
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If two consecutive terms of a geometric sequence are 18 and 9 in that order what is the common ratio of the sequence ?

User Bapors
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1 Answer

7 votes
1/2

Assuming it continues at this exact rate, and the formula for the sequence isn’t something completely crazy, it decreases by 2 or increase by a factor of 1/2 (which still decreases)
User Sauronnikko
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