Question

Which of the following is a rational number?
8
00/100
Οπ
○ 7.8
0 √7

Answer 1

A rational number is any number that can be expressed as a fraction (where both the numerator and the denominator are integers, and the denominator is not zero). Let's evaluate the options you provided:

1. **8** - This can be expressed as \( \frac{8}{1} \), so it is a rational number.
2. **00/100** - This simplifies to \( \frac{0}{100} = 0 \). Zero is also a rational number.
3. **Οπ** - This seems to be a typographical error or an unreadable symbol and cannot be classified as a number.
4. **7.8** - This can be expressed as \( \frac{78}{10} \), so it is a rational number.
5. **0 √7** - This is not a standard representation. If you mean \( 0 \times \sqrt{7} \), that evaluates to 0, which is a rational number. If you mean just \( \sqrt{7} \), that is irrational.

Based on the standard definitions:
- **8** is rational.
- **00/100** is rational (equal to 0).
- **7.8** is rational.

So, the rational numbers among the given options are **8**, **00/100**, and **7.8**.