Which of the following has no line of symmetry?

Options

A. P
B. Q
C. R
D. All of these

Explanation

To determine which of the given letters has no line of symmetry, we will analyze each letter one by one.

### Step-by-Step Solution:

1. **Identify the Letters**: The letters we need to analyze are O, P, Q, and R.

2. **Analyze Letter O**:
- The letter O is a circle.
- A circle has infinite lines of symmetry.
- Therefore, O has lines of symmetry.

3. **Analyze Letter P**:
- The letter P has a vertical line of symmetry.
- If we draw a vertical line down the middle of P, the left side mirrors the right side.
- Therefore, P has a line of symmetry.

4. **Analyze Letter Q**:
- The letter Q has a vertical line of symmetry as well.
- If we draw a vertical line down the middle of Q, the left side does not mirror the right side due to the tail.
- Therefore, Q does not have a line of symmetry.

5. **Analyze Letter R**:
- The letter R has a vertical line of symmetry.
- If we draw a vertical line down the middle of R, the left side mirrors the right side.
- Therefore, R has a line of symmetry.

6. **Conclusion**:
- From our analysis, the letter that has no line of symmetry is **Q**.