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The nth term of an A.P., the sum of whose n terms is $\mathrm{S}_{\mathrm{n}}$, is

A. $S_{n}+S_{n-1}$ B. $S_{n}-S_{n-1}$ C. $S_{n}+S_{n+1}$ D. $S_{n}-S_{n+1}$ Answer: Option B
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Solution(By Apex Team)

$\mathrm{S}_{\mathrm{n}}$ is the sum of first n terms Last term nth term = $\mathrm{S}_{\mathrm{n}}-\mathrm{S}_{\mathrm{n}-1}$

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