Find the Greatest Common Factor for each number pair.1) 60,1211) 4,62) 10,2012) 4,303) 3,213) 15,204)3,1514) 20, 25)5,1515)20.126) 10,816)2,107)15,4017)5.408)24,818) 15, 39) 15,419) 40,410)60,3020 40,24
Answer (1)
To find the Greatest Common Factor (GCF) or Greatest Common Divisor (GCD) for each number pair, we can use various methods such as listing factors, prime factorization, or the Euclidean algorithm. Here's the GCF for each pair:1. **60 and 12** - Factors of 60: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60 - Factors of 12: 1, 2, 3, 4, 6, 12 - GCF: **12**2. **10 and 20** - Factors of 10: 1, 2, 5, 10 - Factors of 20: 1, 2, 4, 5, 10, 20 - GCF: **10**3. **3 and 2** - Factors of 3: 1, 3 - Factors of 2: 1, 2 - GCF: **1**4. **3 and 15** - Factors of 3: 1, 3 - Factors of 15: 1, 3, 5, 15 - GCF: **3**5. **5 and 15** - Factors of 5: 1, 5 - Factors of 15: 1, 3, 5, 15 - GCF: **5**6. **10 and 8** - Factors of 10: 1, 2, 5, 10 - Factors of 8: 1, 2, 4, 8 - GCF: **2**7. **15 and 40** - Factors of 15: 1, 3, 5, 15 - Factors of 40: 1, 2, 4, 5, 8, 10, 20, 40 - GCF: **5**8. **24 and 8** - Factors of 24: 1, 2, 3, 4, 6, 8, 12, 24 - Factors of 8: 1, 2, 4, 8 - GCF: **8**9. **15 and 4** - Factors of 15: 1, 3, 5, 15 - Factors of 4: 1, 2, 4 - GCF: **1**10. **60 and 30** - Factors of 60: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60 - Factors of 30: 1, 2, 3, 5, 6, 10, 15, 30 - GCF: **30**11. **4 and 6** - Factors of 4: 1, 2, 4 - Factors of 6: 1, 2, 3, 6 - GCF: **2**12. **4 and 30** - Factors of 4: 1, 2, 4 - Factors of 30: 1, 2, 3, 5, 6, 10, 15, 30 - GCF: **2**13. **15 and 20** - Factors of 15: 1, 3, 5, 15 - Factors of 20: 1, 2, 4, 5, 10, 20 - GCF: **5**14. **20 and 2** - Factors of 20: 1, 2, 4, 5, 10, 20 - Factors of 2: 1, 2 - GCF: **2**15. **20 and 12** - Factors of 20: 1, 2, 4, 5, 10, 20 - Factors of 12: 1, 2, 3, 4, 6, 12 - GCF: **4**16. **2 and 10** - Factors of 2: 1, 2 - Factors of 10: 1, 2, 5, 10 - GCF: **2**17. **5 and 40** - Factors of 5: 1, 5 - Factors of 40: 1, 2, 4, 5, 8, 10, 20, 40 - GCF: **5**18. **15 and 3** - Factors of 15: 1, 3, 5, 15 - Factors of 3: 1, 3 - GCF: **3**19. **40 and 4** - Factors of 40: 1, 2, 4, 5, 8, 10, 20, 40 - Factors of 4: 1, 2, 4 - GCF: **4**20. **40 and 24** - Factors of 40: 1, 2, 4, 5, 8, 10, 20, 40 - Factors of 24: 1, 2, 3, 4, 6, 8, 12, 24 - GCF: **8**
