Math, asked by iacsaabish, 1 year ago

the sum of nine terms of A.P is 171 and 8th terms is 31. Find the series

Answers

Answered by rohithreddy2001
4

Answer:-949,809


Step-by-step explanation:

Terms are in A.P series

Sum of 9terms=171

a+8d=171

Sum of 8 terms is 31

a+7d=31

Solve 1 and 2 equations

d=140

a=31-980=-949

So terms are -949,-809,-669,-529,-389,-249,-109



iacsaabish: thnkuu :-)
rohithreddy2001: you are welcome
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