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Series

If the sum of...

Question

If the sum of n terms of a sequence is given by $S_{n} = n^{2} + 4 n + 1$

then the n^th term of the sequence is given by

2n+3

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2n + 4

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2n+5

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2n+1

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Solution

The correct option is A
2n+3

The n^th term of the sequence is given by $S_{n} - S_{(n - 1)} = 2 n + 3$

Suggest Corrections

Similar questions

If the $n^{t h}$ term of the sequence is given by $\frac{(n^{2} - 1)}{(n + 1)}$ , then the sum of first n terms of the sequence is given by

n

S_{n} = 2 n^{2} + 3 n,

50^{t h}

n

S_{n} = 3 n^{2} - 5 n + 7

t_{r}

r^{t h}

n

S_{n} = 3 n^{2} - 5 n + 7

t_{r}

r^{t h}

n^{t h}

T_{n} = 2 n + 1

4

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