1 is the greatest and only common factor of 15 and 38. The prime factorization of 15 is 3*5. The prime factorization of 38 is 2*19
The Greatest common factor of 45 and 210 is 15.The prime factorization of 45 is 3*3*5The prime factorization of 210 is 2*3*5*7The greatest common factor is 3*5 = 15
15. 150 = 10 x 15, 165 = 11 x 15 and 10 and 11 are co-prime
The GCF of 15, 25, and 30 is 5.The prime factorization of 15 is 3*5.The prime factorization of 25 is 5*5The prime factorization of 30 is 2*3*5So the GCF of 15, 25, and 30 is 5.
The greatest common factor of 15 and 105 is 15.
1 is the greatest and only common factor of 15 and 38. The prime factorization of 15 is 3*5. The prime factorization of 38 is 2*19
Factors of 45 are 1, 3, 5, 9, 15 and 45.Factors of 165 are 1, 3, 5, 11, 15, 33, 55 and 165.It is clear that 15 is the greatest common factor.Alternate method:Expressing each number as the product of prime numbers can simplify the problem easily.Prime factorization of 45 = 3x3x5Prime factorization of 165 = 3x5x11.From the P.F. of both numbers it is clear that 3x5 = 15 is common.So, Greatest common factor is 15.the GCF is 15
The greatest common factor of 165 and 180 is 5. The prime factorization of 165 is 11*3*5. The prime factors of 180 are 2*2*5*9.
The Greatest common factor of 45 and 210 is 15.The prime factorization of 45 is 3*3*5The prime factorization of 210 is 2*3*5*7The greatest common factor is 3*5 = 15
The GCF of 143, 195, and 260 is 13 The prime factorization of 143 is 11*13. The prime factorization of 195 is 13*15. The prime factorization of 260 is 2*2*5*13 So the GCF is 13.
15. 150 = 10 x 15, 165 = 11 x 15 and 10 and 11 are co-prime
The GCF is 1.
The greatest common factor of 45 and 75 is 15, because it is the highest number that will divide into 45 and 75 evenly.The prime factorization of 45 is 3*3*5The prime factorization of 75 is 3*5*5The common prime factors are 3*5 = 15, so that is the GCF.The GCF is 15.It is: 15
The greatest common factor of the numbers 15 and 11 is 1.
The greatest common factor of 6, 15 and 21 is 3. The prime factorization of 6 is 2*3 The prime factorization of 15 is 3*5 The prime factorization of 21 is 3*7 The GCF is then 3, as it is the only common factor.
1
The GCF of 15, 36, and 70 is 1.The prime factorization of 15 is 3*5The prime factorization of 36 is 2*2*3*3The prime factorization of 70 is 2*5*7Since they have no common factors, they are coprime, and their GCF is 1.