If S1 is the sum of an arithmetic progression of ‘n’ odd number of terms and S2 is the sum of the terms of the series in odd places, then \(\frac{{{S_1}}}{{{S_2}}}\)
\(\frac{{2n}}{{n + 1}}\)
\(\frac{n}{{n + 1}}\)
\(\frac{{n + 1}}{{2n}}\)
\(\frac{{n - 1}}{n}\)
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