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Rakesh and Tessa were asked to find an explicit formula for the sequence 100, 50,...

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Rakesh and Tessa were asked to find an explicit formula for the sequence 100, 50, 25, 12.5,..., where the first term should be f(1).Rakesh said the formula is f(n) = 100. (1/2)^n-1 andTessa said the formula is f(n) = 200.(1/2)^n-1Which one of them is right?Only RakeshOnly TessaBoth Rakesh and Tessa

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