11th Class
Mathematics
Sample Paper
Maths Olympiad Model Test Paper-11
question_answer
N, the set of natural numbers is partitioned into subsets \[{{S}_{1}}=\{1\},\] \[{{S}_{2}}=\{2,\,3\},\] \[{{S}_{3}}=\{4,\,5,\,6\},\] \[{{S}_{4}}=\{7,\,8,\,9,\,10\}\] and so on. Find the sum of elements of the subset\[{{S}_{30}}\].