Tiffany answered 80% of the questions on her math test correctly. There were 40 questions on the test. How many questions did Ti
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This is not true. The infinite series
converges if and only if the sequence of its partial sums converges. The
-th partial sum is
but clearly this diverges as gets arbitrarily large.
converges if and only if the sequence of its partial sums converges. The
but clearly this diverges as
