4) Two numbers are said to be in lowest term if they have a) 1 as HCF       b) 1 as LCM      c) 2 as common factor 

Two numbers are said to be in their lowest terms if their **HCF (Highest Common Factor)** is **1**. This means that the only common divisor between the two numbers is 1, and they cannot be further reduced or simplified.

### Answer:
**a) 1 as HCF**  

### Explanation:
- **Lowest terms** implies that two numbers have no common factors other than 1.
- When the HCF of two numbers is 1, they are said to be **coprime** or **relatively prime** to each other.

Would you like more details on this topic or have any questions?

### Related Questions:
1. What is the definition of HCF and how is it calculated?
2. How do you find if two numbers are coprime?
3. What is the difference between HCF and LCM?
4. Can two consecutive integers have a common factor other than 1?
5. How can you simplify fractions to their lowest terms?

### Tip:
To check if two numbers are in their lowest terms, find their HCF. If it is 1, they are in the lowest terms.

Two numbers are said to be in lowest term if they have a) 1 as HCF b) 1 as LCM c) 2 as common factor

Learn how to identify two numbers in their lowest terms by understanding the concept of HCF (Highest Common Factor). This guide explains coprime numbers, the significance of HCF being 1, and how to determine if two numbers cannot be simplified further. Suitable for Grades 6-8.

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