In an ap 50 terms the sum of first ten terms is 210 and the sum of last fifteen terms is 2565.Find ap
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Sum of last 15 terms =
S(50)-S(35) = 2565 from here you get eqn
and second equation will get from
S(10)=210
Now solve two equation two variable
S(50)-S(35) = 2565 from here you get eqn
and second equation will get from
S(10)=210
Now solve two equation two variable
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