Determine:
(i) `(2)/(3)` of 15 pens
(ii) `(2)/(3)` OF 27 balls
(iii) `(2)/(3)` of 36 balloons

Answer

To solve the problem of determining \(\frac{2}{3}\) of various quantities, we will follow these steps for each part:

### Part (i): \(\frac{2}{3}\) of 15 pens

1. **Identify the total quantity**: We have 15 pens.
2. **Calculate \(\frac{1}{3}\) of 15**:
\[ \frac{1}{3} \text{ of } 15 = \frac{15}{3} = 5 \]
3. **Calculate \(\frac{2}{3}\) of 15**:
\[ \frac{2}{3} \text{ of } 15 = 2 \times \frac{1}{3} \text{ of } 15 = 2 \times 5 = 10 \]

**Final Answer for Part (i)**: \(\frac{2}{3}\) of 15 pens is **10 pens**.

### Part (ii): \(\frac{2}{3}\) of 27 balls

1. **Identify the total quantity**: We have 27 balls.
2. **Calculate \(\frac{1}{3}\) of 27**:
\[ \frac{1}{3} \text{ of } 27 = \frac{27}{3} = 9 \]
3. **Calculate \(\frac{2}{3}\) of 27**:
\[ \frac{2}{3} \text{ of } 27 = 2 \times \frac{1}{3} \text{ of } 27 = 2 \times 9 = 18 \]

**Final Answer for Part (ii)**: \(\frac{2}{3}\) of 27 balls is **18 balls**.

### Part (iii): \(\frac{2}{3}\) of 36 balloons

1. **Identify the total quantity**: We have 36 balloons.
2. **Calculate \(\frac{1}{3}\) of 36**:
\[ \frac{1}{3} \text{ of } 36 = \frac{36}{3} = 12 \]
3. **Calculate \(\frac{2}{3}\) of 36**:
\[ \frac{2}{3} \text{ of } 36 = 2 \times \frac{1}{3} \text{ of } 36 = 2 \times 12 = 24 \]

**Final Answer for Part (iii)**: \(\frac{2}{3}\) of 36 balloons is **24 balloons**.

### Summary of Answers:
- (i) 10 pens
- (ii) 18 balls
- (iii) 24 balloons