math
posted by Anonymous .
Let U = {5, 10, 15, 20, 25, 30, 35, 40}
A = {5, 10, 15, 20}
B = {25, 30, 35, 40}
C = {10, 20, 30, 40}.
Find A ⋂ C.

See answer to previous question.
http://www.jiskha.com/display.cgi?id=1309092028
Here again, A∩C should have two elements. 
A n C {10, 20}
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