Which of the following is **TRUE**?
A$\{a, b\} \subset \{b, c, a\}$
B$\{1, 2, 3\} \subset \{1, 3, 5\}$
C$\{a\} \in \{a, b, c\}$ (as a subset relation)
D$\phi$ is **not** a subset of $\{1, 2\}$
Answer & Solution
Correct answer: A. $\{a, b\} \subset \{b, c, a\}$
Every element of $\{a, b\}$ is in $\{b, c, a\}$, so **A** holds.
- **B** is false: $2 \notin \{1, 3, 5\}$.
- **C** confuses $\in$ with $\subset$ — $\{a\}$ is a **subset** (not an element).
- **D** is false: the empty set is a subset of *every* set.
Related questions
Direct: The mother said, 'Sleep now, my child.' Indirect form isDirect: She said to him, 'Can you help me?' Indirect form isDirect: She said, 'May God bless you!' Indirect form isDirect: The boy said, 'Alas! I have failed.' Indirect form isDirect: He said, 'I bought this book yesterday.' Indirect form isDirect: He said, 'I will see you tomorrow.' Indirect form isDirect: She said, 'Hurrah! We have won the match.' Indirect form isDirect: He said to her, 'Please help me.' Indirect form is