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Which prime factor do 75 and 90 have in common?
3 and 5 are both common prime factors.
What are three numbers that are factors of both 15 and 30?
The common factors are: 1, 5
What prime numbers are factors of both 60 and 105?
60 = 2 * 2 * 3 * 5 105 = 3 * 5 * 7 Common Prime Factors: 3, 5
What is greatest common factor of 18 and 25?
The prime factors of 18 are 2, 3 and 3 The prime factors of 25 are 5 and 5 There are no factors (other than 1) common to both 18 and 25.
What are the common factors of 81 and 75?
Factors of 81 are [3 3 3 3] Factors of 75 are [3 5 5] Common factors [3] ■
What are two numbers that are factors of 3 and 5?
3 and 5 are both prime numbers and 1 is their only common factor.
Is 3 the greatest common factor of 27 and 45?
No. Prime factors of 27: 3 3 3 Prime factors of 45: 3 3 5 Both have two factors of 3, so the greatest common factor is 9.
What are the common factors of 420 and 450?
The common factors of 420 and 450 are numbers that can evenly divide both 420 and 450 without leaving a remainder. To find the common factors, you can first calculate the prime factorization of each number. The prime factorization of 420 is 2^2 * 3 * 5 * 7, and the prime factorization of 450 is 2 * 3^2 * 5^2. By comparing the prime factors of both numbers, you can identify the common factors as 2, 3, 5.
What numbers are factors of both 10 and 15?
The factors of 10 are: 1, 2, 5, 10The factors of 15 are:1, 3, 5, 15The common factors are: 1, 5
What are the common factors of 5 and 30?
5 and 1 are the only common factors of both 5 and 30. (30 has factors of 1, 2, 3, 5, 6, 10, and 30, and 5 only shares two of these factors, being 5 and 1 respectively). 1 and 5
What are the common factors 35 and 75?
The common factors of 35 and 75 are: 1 and 5
What is the greatest common factor of 45 and 250?
Since the numbers end in either 5 or 0, you know that they are both divisible by, which means the greatest common factor is a multiple of 5. If you divide both numbers by 5, you get 45 ÷ 5 = 9 and 250 ÷ 5 = 50. The results, 9 and 50, do not have any factors in common, since the only factors of 9 besides 1 are multiples of 3, and 50 is not divisible by 3. Therefore, the greatest common factor must be 5. Another way to determine the greatest common factor is to find all the factors of the numbers and compare them. The factors of 45 are 1, 3, 5, 9, 15, and 45. The factors of 250 are 1, 2, 5, 10, 25, 50, 125, and 250. The common factors are 1 and 5. Therefore, the greatest common factor is 5. The greatest common factor can also be calculated by identifying the common prime factors and multiplying them together. The prime factors of 45 are 3, 3, and 5. The prime factors of 250 are 2, 5, 5, and 5. The prime factors in common are a single 5, so the greatest common factor is 5.
