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