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1962 AMC 12 Question 14

AMC12 · 1962 AMC 12

Question 14

Let $s$ be the limiting sum of the geometric series $4-\dfrac83+\dfrac{16}{9}-\cdots,$ as the number of terms increases without bound. Then $s$ equals:
  1. a number between $0$ and $1$
  2. $2.4$
  3. $2.5$
  4. $3.6$
  5. $12$