N, the set of natural numbers is divided into subsets A1 = (1), A2 = (2,3), A3 = (4,5,6) and so on. Find the sum of elements in A50.
The series of natural numbers is divided into groups as follows ; (1), (2,3),(4,5,6), (7,8,9,10) and so on. The sum of the numbers in the Nth group is
If the set of natural numbers is partitioned into subset S1 = {1},S2= {2,3},S3= {4,5,6} and so on.Then the sum of the terms is S50 is_______.