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Find the sets A and B if A-B={1,5,7,8},B-A={2.10}. and A ∩ B={3.6.9}.

Quote: Originally Posted by ilovemymath Find the sets A and B if A-B={1,5,7,8},B-A={2.10}. and A ∩ B={3.6.9}. Hint: $\displaystyle X=(X\setminus Y)\cup(X\cap Y).$