Let $S_{n}$ denote the sum of first $n$ terms of an arithmetic\n progression. If $S_{20} = 790$ and $S_{10} = 145$, then\n $S_{15} - S_{5}$ is...

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Let S_{n} denote the sum of first n terms of an arithmetic progression. If S_{20} = 790 and S_{10} = 145, then S_{15} - S_{5} is: Sequence & Series (Mathematics) Question | DivineJEE

Let S_{n} denote the sum of first n terms of an arithmetic progression. If S_{20} = 790 and S_{10} = 145, then S_{15} - S_{5} is: Sequence & Series (Mathematics) Question | DivineJEE | DivineJEE

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