NCERT Exercise 1.3 Q3 - Sets
Question: Let A={1,2,{3,4},5}. Which of these statements are incorrect: (i) {3,4} subset A; (ii) {3,4} belongs to A; (iii) {{3,4}} subset A; (iv) 1 belongs to A; (v) 1 subset A; (vi) {1,2,5} subset A; (vii) {1,2,5} belongs to A; (viii) {1,2,3} subset A; (ix) empty set belongs to A; (x) empty set subset A; (xi) {empty set} subset A?
Answer: The incorrect statements are (i), (v), (vii), (viii), (ix), and (xi).
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