If A a b c B a b c d e and C a b c d e f Find A... - WAEC Mathematics 1989 Question
If A = {a,b,c}, B = {a,b,c,d,e} and C = {a,b,c,d,e,f}. Find (A∪B)∩(A∪C)
A
{a,b,c,d}
B
{a,b,c,d,e}
C
{a,b,c,d,e,f}
D
{a,b,c}
correct option: b
A = {a, b, c}; B = {a, b, c, d, e}; C = {a, b, c, d, e, f}
(A \(\cup\) B) = {a, b, c, d, e}
(A \(\cup\) C) = {a, b, c, d, e, f}
(A \(\cup\) B) \(\cap\) (A \(\cup\) C) = {a, b, c, d, e}
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