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In an AP:

(i) given a = 5, d = 3, an = 50, find n and Sn.

(ii) given a = 7, a13 = 35, find d and S13.

(iii) given a12 = 37, d = 3, find a and S12.

(iv) given a3 = 15, S10 = 125, find d and a10.

(v) given d = 5, S9 = 75, find a and a9

(vi) given a = 2, d = 8, Sn = 90, find n and an

(vii) given a = 8, an = 62, Sn = 210, find n and d.

(viii) given an = 4, d = 2, Sn = –14, find n and a.

(ix) given a = 3, n = 8, S = 192, find d.

(x) given l = 28, S = 144, and there are total 9 terms. Find a

NCERT Class X

Mathematics - Mathematics

Chapter _ARITHMETIC PROGRESSIONS

1
by ghussaincbk

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