Let $S_n$ denote the sum of the first $n$ terms of an arithmetic progression. If $S_{10}=390$ and the ratio of the tenth and the fifth terms is $15: 7$, then $S_{15}-S_5$ is equal to:EndFragment [JEE Main 2024, 01 Feb (Shift 2)]

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Let \(S_n\) denote the sum of the first \(n\) terms of an arithmetic progression. If \(S_{10}=390\) and the ratio of the…

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