Cherryhara619go Cherryhara619go Math Answered A.2 Find the Greatest Common Factor (GCF) of the given numbers using any of the three (3) methods. 3. 21 and 35 A. 6 B. 7 C. 8 D. 9 4. 42 and 45 A. 2 B. 3 C. 4 D. 5 5. 15 and 18 A. 3 B, 5 C. 6 D. 8