can someone ans the one and the second question
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P={4,5,6,7,8}&Q={1,2,3,4,5}
(a) PUQ={1,2,3,4,5,6,7,8}
PΠQ={4,5}
(b) yes
(a) PUQ={1,2,3,4,5,6,7,8}
PΠQ={4,5}
(b) yes
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