Question

A={2,3,5,7} ,B={1, 3,5,7,9}
then find A-(A-B)​

Answer 1

Answer:

A={2,3,5,7}

B={1,3,5,7,9}

A-(A-B)

={2,3,5,7}_{2,3,5,7-1,3,5,7,9}

={2,3,5,7}_{2}

={3,5,7}