The factors of 28 are 1, 2, 4, 7, 14, 28
The factors of 60 are 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60
The greatest factors of any positive integers are the integers themselves. The GCF of 28 and 60 is 4.
The common factors of 28 and 60 are: 1, 2, and 4
To figure out the HCF of 28 and 60, split them up into their prime factors: 28 = 2x2x7 60 = 2x2x3x5 The next step is to identify any common prime factors. In this case, both numbers have two 2s as prime factors. Multiply these together and you get: 2x2 = 4 Therefore 4 is the HCF of 28 and 60.
28
28
The GCF of 28 and 60 is 4. To find the answer, you must find out their factors. 28:1, 2, 4, 7, 11, 28 60:1, 2, 3, 4, 5, 6, 10, 15, 20, 30, 60 As you can see, the greatest common factor of 28 and 60 is 4.
56
56
1, 2, 4, 7, 14, 28 1, 2, 4, 7, 8, 14, 28, 56 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60
LCM: 28GCD: 28 & The factors of 28 are: 1 2 4 7 14 28The prime factors are: 2 x 2 x 7It is: 60
The factors of 60 are: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60. The factors of 84 are: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84.
1. Multiples of 28 are 28, 56, 84, 112, 140, 168, 196, 224, 252, 280, 308, 336, 364, 392, 420, 448, ... 2. Multiples of 60 are 60, 120, 180, 240,300, 360, 420, 480, 540,... In both of this, 420 is the least common factor . The factors of 28 are 2·2·7 60 are 2·2·3·5 Duplicate factors (common to both numbers) are 2·2 Unique factors are 7, 3, and 5. To get the LCM, multiply the common factors by the unique factors. 2·2·3·5·7 = 420