The greatest common factor is 15
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The common factors of 40 and 45 are the numbers that can evenly divide both 40 and 45 without leaving a remainder. The factors of 40 are 1, 2, 4, 5, 8, 10, 20, and 40. The factors of 45 are 1, 3, 5, 9, 15, and 45. The only common factor of 40 and 45 is 5.
To find the Greatest Common Factor (GCF) of 15, 40, and 65, we first need to find the prime factors of each number. The prime factors of 15 are 3 and 5, of 40 are 2, 2, 2, and 5, and of 65 are 5 and 13. To find the GCF, we identify the common factors among the numbers, which are 5. Therefore, the GCF of 15, 40, and 65 is 5.
The factors of 30 are:1, 2, 3, 5, 6, 10, 15, 30The factors of 40 are:1, 2, 4, 5, 8, 10, 20, 40The common factors are:1, 2, 5, 10The Greatest Common Factor:GCF = 10
The GCF of 40 and 75 is 5The factors of 40 are:1, 2, 4, 5, 8, 10, 20, 40The factors of 75 are:1, 3, 5, 15, 25, 75The common factors are:1, 5The Greatest Common Factor (GCF) is:5The GCF is 5.