Third termofanA.P is 15 and sum of first 10 terms is 125 Find its 10th term and sum of first n terms
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hey mate, in this question ,
a=17 and d= -1
therefore , a10 = 8 nd Sn = n/2 ( 35-n) ..
hope it helps.!
a=17 and d= -1
therefore , a10 = 8 nd Sn = n/2 ( 35-n) ..
hope it helps.!
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sorry but answer is wrong
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