If A = {2, 3, 4, 5,} B = {4, 5, 6, 7,} and
C = {6, 7, 8, 9, } find:
(a) A u B =
(b) B n C =
(c) C - A =
C = {6, 7, 8, 9, } find:
(a) A u B =
(b) B n C =
(c) C - A =
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a) 4,5
b)6,7
c)empty or { }