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+1 vote
13.0k views
in Mathematics by (50.7k points)

Let Sn denote the sum of first n-terms of an arithmetic progression. If S10 = 530, S5 = 140, then S20 – S6 is equal to :

(1) 1862

(2) 1842

(3) 1852

(4) 1872

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2 Answers

+1 vote
by (49.2k points)

Answer is: (1) 1862

= 1862

0 votes
by (15 points)

answer is 1862

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