Question 185168
Given A = {1, 2, 3}, B = {3, 4, 5, 6,}, and C = {3, 5, 7}. Evaluate each set 
a) A ∩ B
b) A ∩ C
c) A U C
d) B U C

I will do a to d.  You can do the rest.

∩ = intersection
U = union


For c and d, we need to find all the elements found in the given sets.


(c) A U C = {1, 2, 3, 5, 7}

(d) B U C = {3, 4, 5, 6, 7}

Notice that I did not repeat numbers.

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For a and b, we need to find the common elements that are found in the given sets.


(a) A ∩ B = {3}


(b) A ∩ C = {3}

You can do the rest.