HCF (Highest Common Factor) is the largest number that divides two or more numbers exactly without leaving any remainder. It is also known as the Greatest Common Divisor (GCD).
LCM (Lowest Common Multiple) is the smallest number that is a multiple of two or more given numbers. It is often used in problems involving fractions or multiples.
You can find the HCF by listing all factors of each number and identifying the highest common one. The LCM can be found by listing the multiples of each number and identifying the smallest common multiple. Alternatively, use the relation: HCF × LCM = Product of the two numbers.
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