84. The natu The natural numbers are written as follows 2 3 7 8 9 10 th The sum of the numbers in the n" row is (A) (n2-1)

Natural numbers are written as 1, (2,3), (4,5,6).. Show that the sum of number in the nth group is (n)/(2) (n +1) .

The sequence N of natural numbers is divided into classes as follows : Show that the sum of the numbers in the nth row is n(2n^2+1) .

The sequence N of natural numbers is divided into classes as follows. Show that the sum of the numbers in nth row is (2n^2+1)

The sequence N of natural numbers is divided into classes as follows.Show that the sum of the numbers in nth row is (2n^(2)+1)

Natural numbers are divided into groups in the following way: 1,(2,3),(4,5,6),(7,8,9,10), Show that the sum of the numbers in the nth group is (n(n^2+1))/2

The sequence of odd natural numbers is divided into groups 1,3,5,7,9,11,"…." and so on. Show that the sum of the numbers in nth group is n^(3) .

The sequence of odd natural numbers is divided into groups 1,3,5,7,9,11,"…." and so on. Show that the sum of the numbers in nth group is n^(3) .