Daily ChallengeHardSequences
What is the sum of the infinite geometric series 1 + \tfrac{1}{2} + \tfrac{1}{4} + \tfrac{1}{8} + \ldots?
Qual é a soma da série geométrica infinita 1 + \tfrac{1}{2} + \tfrac{1}{4} + \tfrac{1}{8} + \ldots?
Answer options
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Solution
S = \frac{a}{1-r} = \frac{1}{1-0.5} = 2