To calculate the Highest Common Factor (HCF) of 28, 14, and 21, we first find the factors of each number:
7
The GCF is 14.
84 and 14, respectively.
The Highest Common Factor (HCF) of 21, 77, and 84 is 7. To find the HCF, you need to identify the common factors of the numbers and determine the highest one they all share. In this case, the factors of 21 are 1, 3, 7, 21; the factors of 77 are 1, 7, 11, 77; and the factors of 84 are 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84. The highest common factor among them is 7.
The Highest Common Factor (HCF) of two numbers is the largest positive integer that divides both numbers without leaving a remainder. To find the HCF of 168 and 252, we first list the factors of each number: 168 (1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168) and 252 (1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 252). The common factors are 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, and 84. Therefore, the HCF of 168 and 252 is 84.
7
The GCF is 14.
The least common multiple of 14 and 21 is 42.14, 28, 42, 56 ...21, 42, 63, 84, ...
The GCF is 28.
The GCF is 28.
First you express the numbers as the product of their prime factors: 28 = 2x2x7 21 = 3x7 Next you find the HCF. In this case, the HCF is 7. Finally, you multiply the numbers together and divide by the HCF. 28x21/7 = 84 Therefore the LCM of 28 and 21 is 84.
84 and 14, respectively.
The Highest Common Factor is 14
GCF(14, 28, 21) = 7
The GCF is 2.
7, 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84.
The LCM is: 84