JEE Advanced Model Paper 11 with solutions for online practice

Question : 53 of 60

Marks: +1, -0

Natural numbers are divided into groups as follows
S1 = {1} , S2 = {2 , 3} , S3 = {4 , 5 , 6} , S4 = {7 , 8 , 9 , 10} ...... and so on