find the sum of first
10terms of an Ap
sreyashiny2002:
friend plz will you tell this
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S=n/2[2a+(n-1)d]
S,10=10/2[2a+(10-1)d]
=5(2a+9d)
=10a+45d
S,10=10/2[2a+(10-1)d]
=5(2a+9d)
=10a+45d
no the answer is 570
you hadn't wrote the A.P.series
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