[" 6.If anm of "3^(n)" and "B^(2)" lermas of an "AP" is "7" and sum of "T" and "14^(@)" terms is "-3" then "],[" find the I0" serm."]

If sum of 3^(rd) and 8^(th) terms of an A.P. is 7 and sum of 7^(th) and 14^(th) terms is -3 then find 10^(th) term.

If sum of 3rd and 8th term of an A.P is 7 and sum of 7th and 14th term is -3 , then find 10th term.

If sum of the 3rd and the 8th terms of an AP is 7 and the sum of the 7th and 14th terms is -3 , then find the 10th term.

If sum of the 3rd and the 8th terms of an AP is 7 and the sum of the 7th and 14th terms is -3, then find the 10th term.

If sum of the 3 ^(rd) and the 8^(th) terms of A.P. is 7 and the sum of the 7^(th) and the 14 ^(th) terms is -3, find the 10^(th) term.

If the n^(th) term of an A.P. is 7-3n, find the sum of twenty five terms.

if nth term of an AP is 3n+2 then find the sum n terms.

If the n^(t h) term of an A.P. is (2n+1), find the sum of first n terms of the A.P.

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.