AMC / AIME · Geometric Sequences · Hard
Geometric Sequences: A ball rebounds to math of its height. Dropped from math, find fourth-bounce height.
Common ratios.
Try the problem
A ball rebounds to of its height. Dropped from , find fourth-bounce height.
Hint and answer
Concept to use
Infinite $|r|<1$.
Hint
Use ratios for terms and the finite or infinite geometric-sum formula.
Answer
81/4
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