What is the HCF of 18 and 30 and 48?
The Highest Common Factor (HCF) of 18, 30, and 48 is the largest number that divides all three numbers without leaving a remainder. To find the HCF, we first need to find the factors of each number. The factors of 18 are 1, 2, 3, 6, 9, and 18. The factors of 30 are 1, 2, 3, 5, 6, 10, 15, and 30. The factors of 48 are 1, 2, 3, 4, 6, 8, 12, 16, 24, and 48. The largest number that is common among all three sets of factors is 6, so the HCF of 18, 30, and 48 is 6.