Question

Which of the following are sets? Justify your answer

(i) The collection of all the months of a year beginning with letter M.

(ii) The collection of difficult topics in Mathematics.

Answer 1

(i) The set of all the months of a year beginning with letter M is {March, May} So, this collection is well defined and hence, it is a set. 

(ii) The collection of difficult topic in Mathematics is not a set, because the term 'difficult topic’ is not well defined.