" GM of the numbers "3,3^(2),3^(3),......3^(n)" is "

The arthmetic mean of the numbers 1,3,3^(2), … ,3^(n-1), is

The arthmetic mean of the numbers 1,3,3^(2), … ,3^(n-1), is

The GM of 2, 2^(2),2^(3).......2^(n) is

If N is the number of ways in which 3 distinct numbers canbe selected from the set {3^(1),3^(2),3^(3),...,3^(10)} so that they form a G.P. then the value of N/5 is

Find the G.M. of the numbers 2,3 and 4.

Mean of the numbers 1,2,3,..., n with respective weights 1^(2)+1,2^(2)+2,3^(2)+3,......,n^(2)+n is

Mean of the numbers 1,2,3,..., , n with respective weights 1^(2)+1,2^(2)+2,3^(2)+3,......,n^(2)+n is