Question

let A = { x : x is a positive divisor of 12} B = { x : x is a prime number less than 10} verify (AUB) - A = B - A ?​

Answer 1

Step-by-step explanation:

A={1,2,3,4,6,12}

B={2,3,5,7}

(AuB)={1,2,3,4,5,6,7,12}

(AuB)-A={1,2,3,4,5,6,7,12}-{1,2,3,4,6,12}

={5,7}

B-A={2,3,5,7}-{1,2,3,4,6,12}

={5,7}

so both are equal

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