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4. Show that the following four conditions are equivalent:

(i) A⊂B                 (ii) A–B=\(\phi\)             (iii) A∪B=B             (iv) A∩B=A

Sets

Miscellaneous Exercise

http://ncert-solutions-class-11-chapter-1-sets-miscellaneous-exercise-question-4
http://ncert-solutions-class-11-chapter-1-sets-miscellaneous-exercise-question-4
http://ncert-solutions-class-11-chapter-1-sets-miscellaneous-exercise-question-4