what is the greatest common factor of 15,30 and 45

Sagot :

15

Because,

45 = 3 × 3 × 5

30 = 2 × 3 × 5

15 = 3 × 5

15

Explanation:

Factors of:

15 = 1, 3, 5, 15

30 = 1, 2, 3, 5, 6, 10, 15, 30

45 = 1, 3, 5, 9, 15, 45

Common factors: 1, 3, 5, 15

Greatest Common Factor (GCF): 15