Just 1.
The common factors of 35 and 75 are: 1 and 5
The common factors of 25 and 45 are: 1 and 5
The prime factors of 45 are 3 and 5.
The factors of 15 are:1, 3, 5, 15The factors of 45 are:1, 3, 5, 9, 15, 45The factors of 75 are:1, 3, 5, 15, 25, 75The common factors are:1, 3, 5, 15
The common factors of 30 and 45 are: 1, 3, 5, 15.
Factors of 81 are [3 3 3 3] Factors of 75 are [3 5 5] Common factors [3] ■
The common factors of 35 and 75 are: 1 and 5
The factors of 3 are 1 and 3 and the factors of 5 are 1 and 5
3 To clarify: The prime factors of 45 are 3, 3, and 5 (or 32, 5.) The prime factors of 60 are 2, 2, 3, and 5 (or 22, 3, 5.) Therefore, the common factors are 1, 3, 5, and 15, while the common prime factors are only 3 and 5.
The common factors of 25 and 45 are: 1 and 5
The prime factors of 45 are 3 and 5.
1683 factors to [3 3 11 17] 675 factors to [3 3 3 5 5] Common factors [3 3] Answer is 9. ■
3, 5 and 15 are common factors
The factors of 3 are 1 and 3.The factors of 4 are 1, 2, and 4.The factors of 5 are 1 and 5.The only common factor of 3, 4, and 5 is 1. The least common factor is 1.
1, 3, 5 and 15The common factors are: 1, 3, 5, 15.
The factors of 15 are:1, 3, 5, 15The factors of 45 are:1, 3, 5, 9, 15, 45The factors of 75 are:1, 3, 5, 15, 25, 75The common factors are:1, 3, 5, 15
The factors of 15 are 3 and 5. The factors of 21 are 3 and 7. So the common factor is 3.