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2. List all the prime numbers between 8 and 28 . 3. a) Write down all the factors of 120 . b) Which of the factors of 120 are composite numbers

Ask by Hills Moreno. in South Africa
Jan 23,2025

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Answer

**2. Prime numbers between 8 and 28:** - 11, 13, 17, 19, 23 **3. a) Factors of 120:** 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120 **3. b) Composite factors of 120:** 4, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120

Solution

Certainly! Let's address each of your questions step by step. --- ### **2. List all the prime numbers between 8 and 28.** **Prime numbers** are numbers greater than 1 that have no positive divisors other than 1 and themselves. **Prime numbers between 8 and 28:** - **11** - **13** - **17** - **19** - **23** --- ### **3.** #### **a) Write down all the factors of 120.** **Factors** of a number are integers that can be multiplied together to produce that number. **All factors of 120:** 1. **1** 2. **2** 3. **3** 4. **4** 5. **5** 6. **6** 7. **8** 8. **10** 9. **12** 10. **15** 11. **20** 12. **24** 13. **30** 14. **40** 15. **60** 16. **120** #### **b) Which of the factors of 120 are composite numbers?** **Composite numbers** are integers greater than 1 that have more than two distinct positive divisors (i.e., they are not prime). From the list of factors of 120: - **Composite Factors of 120:** - **4** (factors: 1, 2, 4) - **6** (factors: 1, 2, 3, 6) - **8** (factors: 1, 2, 4, 8) - **10** (factors: 1, 2, 5, 10) - **12** (factors: 1, 2, 3, 4, 6, 12) - **15** (factors: 1, 3, 5, 15) - **20** (factors: 1, 2, 4, 5, 10, 20) - **24** (factors: 1, 2, 3, 4, 6, 8, 12, 24) - **30** (factors: 1, 2, 3, 5, 6, 10, 15, 30) - **40** (factors: 1, 2, 4, 5, 8, 10, 20, 40) - **60** (factors: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60) - **120** (factors: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120) *Note:* The numbers **1**, **2**, **3**, and **5** are **not** composite: - **1** is neither prime nor composite. - **2**, **3**, and **5** are **prime numbers**. --- If you have any further questions or need additional clarification, feel free to ask!

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Bonus Knowledge

The prime numbers between 8 and 28 are 11, 13, 17, 19, 23, and 29. These are the numbers greater than 1 that have no divisors other than 1 and themselves. Prime numbers are like the superheroes of the math world because they can't be broken down any further! For the factors of 120, they are 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, and 120. Among these, the composite numbers are 4, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, and 120. Composite numbers are like a team of all the factors coming together, making them more than just the sum of their parts!

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