If for an A-P- Sn-n2-3 nWhat is the n th term-A- 2 n -2B- n-4C- 2 n -3D- 2 n -4

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Formula for Sum of n Terms of an AP

If for an A.P...

Question

If for an A.P. S_n=n² + 3n
What is the n^th term?

2n+2

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2n+4

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n-4

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2n-3

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Solution

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Similar questions

The next number in the series is ___ ?

2n-1,2n,2n+1, 2n+2,___

S_{n} = \sum_{r = 0}^{n} \frac{1}{^{n} C_{r}}

t_{n} = \sum_{r = 0}^{n} \frac{r}{^{n} C_{r}},

\frac{t_{n}}{S_{n}}

$n^{t h}$ term of the series 2 + 4 + 7 + 11 + ...... will be

If the ratio of sum of m terms and n terms of an A.P. is $m^{2}$ : $n^{2}$ , then the ratio of its $m^{t h}$ and $n^{t h}$ terms will be :

a_{1}, a_{2}, a_{3}, . . ., a_{n}

s_{n}

(S_{0} = 0), t h e n \sum_{k = 0}^{n}^{n} C_{k} S_{k}

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