If the sum $S_{n}$ of n terms of an A.P. is given, then $n^{t h}$ term $a_{n}$ of A.P can be determined by $a_{n} = S_{n} - S_{n - 1}$ .

False

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True

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Solution

The correct option is B True

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(a) S_n + S_n−1

(b) S_n− S_n−1

(c) S_n + S_n+1

(d) S_n − S_n+1

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(a) S_n − 2S_n−1+ S_n−2

(b) S_n − 2S_n−1− S_n−2

(c) S_n − S_n−2

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Q. If the sum

S_{n}

of n terms of an A.P. is given, then

n^{t h}

term

a_{n}

of A.P can be determined by

a_{n} = S_{n} - S_{n - 1}

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If the sum Sn of n terms of an A.P. is given, then nth term an of A.P can be determined by an=Sn−Sn−1.

The correct option is B True

If the sum $S_{n}$ of n terms of an A.P. is given, then $n^{t h}$ term $a_{n}$ of A.P can be determined by $a_{n} = S_{n} - S_{n - 1}$ .