Write down the numerator and the denominator of each of the following rational numbers :
(i) `12/17`, (ii) `6/(-23)`, (iii) `-21/5`, (iv) 7, (v) `-8`

Answer

To solve the question of identifying the numerator and denominator of each given rational number, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the first rational number: `12/17`**
- The numerator is the number above the fraction line, which is **12**.
- The denominator is the number below the fraction line, which is **17**.

2. **Identify the second rational number: `6/(-23)`**
- The numerator is **6**.
- The denominator is **-23** (the negative sign indicates that the whole fraction is negative).

3. **Identify the third rational number: `-21/5`**
- The numerator is **-21** (the negative sign indicates that the whole fraction is negative).
- The denominator is **5**.

4. **Identify the fourth rational number: `7`**
- This can be expressed as `7/1` to fit the format of a rational number.
- The numerator is **7**.
- The denominator is **1**.

5. **Identify the fifth rational number: `-8`**
- This can be expressed as `-8/1` to fit the format of a rational number.
- The numerator is **-8** (the negative sign indicates that the whole fraction is negative).
- The denominator is **1**.

### Summary of Results:
- (i) `12/17`: Numerator = 12, Denominator = 17
- (ii) `6/(-23)`: Numerator = 6, Denominator = -23
- (iii) `-21/5`: Numerator = -21, Denominator = 5
- (iv) `7`: Numerator = 7, Denominator = 1
- (v) `-8`: Numerator = -8, Denominator = 1