What is HCF? Explain with a real-life example for Class 10 student. (Class 10 mathematics, Chapter: Real Numbers)

HCF stands for Highest Common Factor (also called GCD — Greatest Common Divisor). It is the greatest number that divides each of the given numbers completely. For example, the HCF of 12 and 18 is 6, because 6 is the largest number that divides both 12 and 18 exactly.