1.

If \[U=\left\{ 1,\text{ }3,\text{ }5,\text{ }7,\text{ }9,\text{ }a,\text{ }b,\text{ }c,\text{ }d \right\}\]and \[A=\left\{ 1,\text{ }3,\text{ }5 \right\}\]and \[B=\left\{ a,\text{ }b,\text{ }c \right\}\]then \[\left( A\bigcup B \right)'\]

A.  \[\left\{ 3,\text{ }3,\text{ }5,\text{ }a,\text{ }b,\text{ }c \right\}\]
B.      1, 3, 5
C.  \[\left\{ a,\text{ }b,\text{ }c \right\}\]
D. \[\left\{ 7,\text{ }9,\text{ }d \right\}\]
E.  None of these
Answer» E.  None of these


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