Factors of 45: 1, 3, 5, 9, 15, 45.
Factors of 55: 1, 5, 11, 55.
Factors of 20: 1, 2, 4, 5, 10, 20.
GCF (45, 55, 20) = 5
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The factors of 45 are 1, 3, 5, 9, 15, and 45. The factors of 60 are 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, and 60. The common factors are 1, 3, 5, and 15. Therefore, the greatest common factor is 15. You can also determine the greatest common factor from the prime factors. The prime factors of 45 are 3, 3, and 5. The prime factors of 60 are 2, 2, 3, and 5. The common prime factors are 3 and 5, so the greatest common factor is 3 x 5 = 15.
Oh, dude, you're hitting me with the math questions, huh? Well, the common factors of 27 and 45 are 1, 3, and 9. So, like, those are the numbers that both 27 and 45 can be divided by without leaving a remainder. Math, man, it's like a secret language or something.
The only factors common to all three numbers are... 1 & 5
Factors of 45 are: 1,3,5,9,15,45 Factors of 60 are: 1,2,3,4,5,6,10,12,15,20,30,60 The greatest common factor is 15 as seen in the above lists
The factors of 30 are 1, 2, 3, 5, 6, 10, 20, and 30. The factors of 45 are 1, 3, 5, 9 15, and 45. The common factors of 30 and 45 are 1, 3, and 5.