NCERT Exercise 2.1 Q8 - Relations and Functions
Question: Let A={1,2} and B={3,4}. Write A x B. How many subsets will A x B have? List them.
Answer: A x B = {(1,3),(1,4),(2,3),(2,4)}. Its 16 subsets are: empty set; {(1,3)},{(1,4)},{(2,3)},{(2,4)}; {(1,3),(1,4)},{(1,3),(2,3)},{(1,3),(2,4)},{(1,4),(2,3)},{(1,4),(2,4)},{(2,3),(2,4)}; {(1,3),(1,4),...
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