💣 Q :55 Prep 1 Question Bank T1

a) If \( A \subseteq B \), then \( A \cap B = \) , \( A \cup B = \)

\( A \cap B = A \), \( A \cup B = B \)

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b) If \( A = B \), then \( A \cap B = \) , \( A \cup B = \)

\( A \cap B = A \) (or \( B \)), \( A \cup B = A \) (or \( B \))

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c) \( A \cap \emptyset = \)

\( A \cap \emptyset = \emptyset \)

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d) \( \emptyset \cup X = \)

\( \emptyset \cup X = X \)

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e) \( X \cap X = \)

\( X \cap X = X \)

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f) If \( \{x, 3\} \subseteq \{3, 5\} \), then \( x = \)

5

3

0

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g) If \( \{0\} \subseteq \{2, x, 5\} \), then \( x = \)

0

2

5

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h) If \( \{2\} \not\subseteq \{5, x\} \), then \( x \) cannot be ...... or ......

\( x \) cannot be 2 or \{5\}