Question

Helppp let m be the set of all factors of 36, and let n be the set of all multiples of 3 that are less than 20. list all elements of the intersection,union, and elements of m and n

Answer 1

By the given information about the sets A and B, we have :

A={1,2,3,4,6,9,12,18,36}

B={3,6,9,12,15,18,21,24,27,30,36,…}

since A is the set of factors of 36 and B is the set of multiples of 3.

SOLUTION - 1:-

Now, recall the definition of intersection of two sets. Intersection of two sets say set A and B, denoted by A∩B is the set of all those elements which belong to both the sets A as well as B.

Therefore, A∩B={3,6,9,12,18,36}.

SOLUTION - 2 :-

Now, we have to find A \ B.

A \ B is the set of all those elements which belongs to A but don't belong to the set B.

So, clearly A \ B = {1,2,4}

Explanation:

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