AMC / AIME · Geometric Sequences · Hard
Geometric Sequences: Three consecutive geometric terms have product math. Find the middle term.
Common ratios.
Try the problem
Three consecutive geometric terms have product . Find the middle term.
Hint and answer
Concept to use
Infinite $|r|<1$.
Hint
Use ratios for terms and the finite or infinite geometric-sum formula.
Answer
12
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