Which of the following statements are true ?
`phi in {a,b,c} `

Answer

To determine whether the statement "φ ∈ {a, b, c}" is true or false, we need to analyze the meaning of the symbols involved.

### Step-by-Step Solution:

1. **Understanding φ (phi)**:
- The symbol φ (phi) represents the empty set, which is a set that contains no elements.

2. **Understanding the Set {a, b, c}**:
- The set {a, b, c} contains three elements: a, b, and c.

3. **Determining Membership**:
- The statement "φ ∈ {a, b, c}" means we are checking if the empty set (φ) is an element of the set {a, b, c}.

4. **Analyzing the Membership**:
- The elements of the set {a, b, c} are a, b, and c. The empty set (φ) is not one of these elements.

5. **Conclusion**:
- Since φ is not one of the elements in the set {a, b, c}, the statement "φ ∈ {a, b, c}" is false.

### Final Answer:
The statement "φ ∈ {a, b, c}" is **false**.

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