Question 475208: Let U = {10, 11, 12, 13, 14, 15, 16, 17, 18, 19}, A = {11, 13, 15, 17}, B = {14, 18}, and C = {11, 14, 17, 18, 19}. List all the members of each of the sets. (Enter solutions from smallest to largest. If there are any unused answer boxes, enter NONE in the last boxes.)
(a) (A ∪ B) ∪ C
{ , , , , , , }
(b) A ∩ B ∪ C
{ , , , , , , , , , }
I really do not understand this sort of math.I tried until it hurts to figure these out.I keep getting the wrong answers.Can you help me with this one please?Thank you!
Answer by MathLover1(20849)   (Show Source):
You can put this solution on YOUR website!
U = {10, 11, 12, 13, 14, 15, 16, 17, 18, 19},
A = {11, 13, 15, 17},
B = {14, 18}, and
C = {11, 14, 17, 18, 19}.
NONE
(a) (A ∪ B) ∪ C
(A ∪ B) ={11, 13,14, 15, 17, 18}
(A ∪ B) ∪ C={11, 13,14, 15, 17, 18}∪ C{11, 14, 17, 18, 19}={11, 13,14, 15, 17, 18, 19}
(b) A ∩ B ∪ C
A ∩ B ={ }
A ∩ B ∪ C={ }∪{11, 14, 17, 18, 19}={11, 14, 17, 18, 19}
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