NCERT Answers for Class 11 Math's Section 1 - Sets Exercise 1.1,1.2
Practice 1.1 1. Which of the following are sets? Legitimize your response. (I) The assortment of the entire months of a year starting with the letter J. (ii) The assortment of ten most capable journalists of India. (iii) A group of eleven best-cricket batsmen of the world. (iv) The assortment of all young men in your group. (v) The assortment of all regular numbers under 100. (vi) An assortment of books composed by the essayist Munshi Prem Chand. (vii) The assortment of every even number. (viii) The assortment of inquiries in this Section. (ix) An assortment of the most perilous creatures of the world. Solution : (I) The assortment of the entire months of a year starting with the letter J is a distinct assortment of items as one can recognize a month which has a place with this assortment. Thus, this assortment is a set. (ii) The assortment of ten most gifted scholars of India is certainly not an obvious assortment as the models to decide an essayist's ability might contrast star...