[" -7.If "n" A.M.s are inserted between two numbers,prove that the sum of the means equidistar "],[" from the beginning and the end is constant."]

If n A.Ms are inserted between two numbers, prove that the sum of the means equidistant from the beginning and the end is constant.

If n A.Ms are inserted between two numbers, prove that the sum of the means equidistant from the beginning and the end is constant.

Prove that the sum of nth term from the beginning and nth term from the end of an A.P. is· constant.

n A.M.'s are inserted between 2 and 100 then sum of n A.M's is

If n A.M.'s are inserted between 4 and 96 then sum of n A.M.'s is

If n A.M's are inserted between two quantites a and b then their sum is equal to

If eleven A.M.s are inserted between 28 and 10, then find the number of integral A.M.s .

If eleven A.M. s are inserted between 28 and 10, then find the number of integral A.M. s.

Prove that in an A.P. of finite number of terms the sum of any two terms equidistant from the beginning and the end is equal to the sum of the first and last terms.