Question

find the greatest common tactor.

1. 5

30

1. 24

36

1. 36

42

1. 39

21

1. 35

45

1. 7

21

1. 45

30

1. 36

21

1. 36

18

1. 5

10

1. 2

24

1. 14

10

1. 20

25

1. 10

5

1. 18

30

1. 30

28

Explanation:

Step1: List factors of 5

Factors of 5 are 1, 5.

Step2: List factors of 30

Factors of 30 are 1, 2, 3, 5, 6, 10, 15, 30.

Step3: Find common factors

Common factors are 1, 5.

Step4: Determine GCF

Greatest common factor (GCF) is 5.

Answer:

1. 5
2. 12

3.

Step1: List factors of 36

Factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, 36.

Step2: List factors of 42

Factors of 42 are 1, 2, 3, 6, 7, 14, 21, 42.

Step3: Find common factors

Common factors are 1, 2, 3, 6.

Step4: Determine GCF

GCF is 6.