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# Let A = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10} and B = {2, 3, 5, 7}. Find A $\cap$ B and hence show that A $\cap$ B = B.

We have A $\cap$ B = {2, 3, 5, 7} = B. We note that B $\subset$ A and that A $\cap$ B = B.