ACTIVITYA. Find the Greatest Common Factor (GCF) of the following numbers.1.9 and 12GCF:SOLUTION:2.20 and 30GCF:SOLUTION:B. Find the Least Common Multiple (LCM) of the given numbers.4.12 and 18LCM:SOLUTION:5.4, 5, 8 and 10LCM:SOLUTION:3. 18, 24 and 32GCF:SOLUTION:
Answer (1)
1. GCF of 9 and 12GCF:3 SOLUTION:- Factors of 9: 1, 3, 9 - Factors of 12: 1, 2, 3, 4, 6, 12 - Common factors: 1, 3 - Greatest common factor: 32. GCF of 20 and 30GCF:10 SOLUTION:- Factors of 20: 1, 2, 4, 5, 10, 20 - Factors of 30: 1, 2, 3, 5, 6, 10, 15, 30 - Common factors: 1, 2, 5, 10 - Greatest common factor: 103. GCF of 18, 24, and 32GCF: 2 SOLUTION:- Factors of 18: 1, 2, 3, 6, 9, 18 - Factors of 24: 1, 2, 3, 4, 6, 8, 12, 24 - Factors of 32: 1, 2, 4, 8, 16, 32 - Common factors: 1, 2 - Greatest common factor: 2B. LCM of the given numbers4. LCM of 12 and 18LCM:36 SOLUTION:- Multiples of 12: 12, 24, 36, 48, ... - Multiples of 18: 18, 36, 54, ... - Least common multiple: 36
