1) What is the GFC between 12 and 24? a) 2 b) 6 c) 8 d) 12 2) What is the GFC between 18 and 48? a) 2 b) 6 c) 8 d) 12 3) What is the GFC between 28 and 40? a) 2 b) 4 c) 12 d) 28 4) What is the GFC between 10 and 40? a) 1 b) 2 c) 10 d) 15 5) What is the GFC between 21 and 28? a) 1 b) 7 c) 14 d) 21 6) What is the GFC between 15 and 25? a) 15 b) 10 c) 2 d) 5 7) What is the GFC between 30 and 33? a) 2 b) 12 c) 30 d) 3 8) What is the GFC between 45 and 63? a) 1 b) 9 c) 15 d) 23 9) What is the GFC between 25 and 75? a) 1 b) 15 c) 25 d) 10 10) What is the GFC between 36 and 96 ? a) 12 b) 11 c) 23 d) 41

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