$\mathbf { Find~ A \cup R ~and A \cap R~ for~ the~ sets~ A~ and~ B}$

question 34

Multiple Choice

$\mathbf { Find~ A \cup R ~and A \cap R~ for~ the~ sets~ A~ and~ B}$
-A = { $\left\{ 1 , \frac { 1 } { 3 } , \frac { 1 } { 9 } , \frac { 1 } { 27 } , \frac { 1 } { 81 } , \ldots \right\}$ B = { $\left\{ \frac { 1 } { 9 } , \frac { 1 } { 81 } , \frac { 1 } { 729 } \right\}$

• A) \(\begin{array} { l }
• A \cup B = \left\{ \frac { 1 } { 9 } , \frac { 1 } { 81 } \right\} \\\\
• A \cap B = \left\{ 1 , \frac { 1 } { 3 } , \frac { 1 } { 9 } , \frac { 1 } { 27 } , \frac { 1 } { 81 } , \ldots \right\}
• \end{array}\)
• B) \(\begin{array} { l }
• \mathrm { A } \cup \mathrm { B } = \left\{ \frac { 1 } { 9 } , \frac { 1 } { 81 } , \frac { 1 } { 729 } \right\} \\\\
• \mathrm { A } \cap \mathrm { B } = \left\{ 1 , \frac { 1 } { 3 } , \frac { 1 } { 9 } , \frac { 1 } { 27 } , \frac { 1 } { 81 } , \ldots \right\}
• \end{array}\)
• C) \(\begin{array} { l }
• \mathrm { A } \cup \mathrm { B } = \left\{ 1 , \frac { 1 } { 3 } , \frac { 1 } { 9 } , \frac { 1 } { 27 } , \frac { 1 } { 81 } , \ldots \right\} \\\\
• \mathrm { A } \cap \mathrm { B } = \left\{ \frac { 1 } { 9 } , \frac { 1 } { 81 } , \frac { 1 } { 729 } \right\}
• \end{array}\)
• D) \(\begin{array} { l }
• A \cup B = \left\{ 1 , \frac { 1 } { 3 } , \frac { 1 } { 9 } , \frac { 1 } { 27 } , \frac { 1 } { 81 } , \ldots \right\} \\\\
• A \cap B = \left\{ \frac { 1 } { 9 } , \frac { 1 } { 81 } \right\}
• \end{array}\)

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