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0 votes
5.1k views
in Mathematics by (33.0k points)

The 13th term of an AP is 4 times its 3rd term. If its 5th term is 16 then the sum of its first ten terms is 

(a) 150 (b) 175 (c) 160 (d) 135

1 Answer

+1 vote
by (60.2k points)
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Best answer

Let a be the first term and d be the common difference of the AP. Then,

Thus, the sum of its first 10 terms is 175.

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