Find the Greatest Common Factor (GCF) of the following pair of numbers:

Question 1: 100 and 240

10

12

20

40




Question 2: 24 and 51

3

4

6

12




Question 3: 204 and 85

6

12

17

34




Question 4: 121 and 55

11

22

33

55




Question 5: 34 and 81

1

2

9

17



Question 6: 10 and 15

2

3

5

10



Question 7: 44 and 12

2

3

4

6




Question 8: 52 and 39

9

13

14

26




Question 9: 168 and 420

21

42

64

84




Question 10: 100 and 10

10

5

2

1




Press the Submit button to see the results.