Question

For questions 1-6, let U={0,1,4,9,16,25,36,49,64,81}, A={0,9,16,36,64}, and B={1,9,25,49,81}. Find A U B

then Find B'

then find |A|​

Answer 1

the answer A U B is 0,1,9,16,25,36,49,64,81. and the answer A n B is 9