Question

plz tєll cσrrєct αnswєr plz​

Answer 1

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A = {x : x is a prime, x < 20},B={x:x w, x < 10} then ( A- B) (B-A) = ?

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A => {x : x is odd number and x < 10}

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

B=>{x : x is prime and x < 10}

=> {2,3,5,7}

==>A-B={1,3,5,7,9}--{2,3,5,7}

=>{1,9}

==>B-A{2,3,5,7}--{1,3,5,7,9}

=>{2}

===>A-B=B-A

Answer 2

Answer:

A => {x : x is odd number and x < 10}

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

B=>{x : x is prime and x < 10}

=> {2,3,5,7}

==>A-B={1,3,5,7,9}--{2,3,5,7}

=>{1,9}

==>B-A{2,3,5,7}--{1,3,5,7,9}

=>{2}

===>A-B=B-A