[" An "AP" consists of "31" terms,If its "16" th term is "m" ,"],[" then sum of all the terms of this "AP" is "]

An A.P. consists of 31 terms. If its 16th terms is m, then the sum of all the terms of this A.P. is

An A.P. consists of 31 terms. If its 16th terms is m, then the sum of all the terms of this A.P. is

An A.P. has 21 terms. If its 11^(th) term is 25, sum of all the term is :

An A.P. consists of n ( odd terms ) and its middle term is m. Then the sum of the A.P. is :

An A.P. consists of n terms. If the sum of its first three terms is x and the sum of the last three terms is y, then show that, the sum of all the terms of the A.P. is (n)/(6)(x+y) .

An A.P. consists of 57 terms of which 7th term is 13 and the last term is 108. Find the 45th term of this A.P.

If 11th term of A.P. is 38 and 16th term is 73, then its first term is :

The 13^(th) term of an AP is 4 times its 3^(rd) term. If its 5^(th) term is 16 then the sum of its first ten terms is