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Sum To N terms Of an A.P...

Sum To N terms Of an A.P

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Sum of n Terms of an A.P. | Examples

If the sum of n terms of an A.P is (4n^(2)-3n)/(4) then ,n^(th) term of the A.P

If the sum of n terms of an A.P is cn (n-1)where c ne 0 then the sum of the squares of these terms is

If the sum of n terms of an A.P is 2n+3n^(2) , find the r^(th) term

If sum of n terms of an A.P. is 4n^(2) +7n , find the 15^(th) term.

The sum of n terms of an A.P. is n^(2) + 3n . Find its 20th term.