MATH101 Lecture Notes - Lecture 2: Greatest Common Divisor, Prime Factor
Document Summary
Gcf stands for "greatest common factor," while lcm stands for "least common. Both gcf and lcm describes the relationship between two or more numbers. Gcf is the highest number that can divide all the given numbers without a remainder. For example, the gcf of 12 and 18 is 6 because 6 is the largest number that can divide both 12 and 18 evenly. Lcm is the smallest number that is divisible by all the given numbers. Lcm of 4 and 6 is 12 because 12 is the smallest number that is divisible by both 4 and. Here are the steps to nd the gcf and lcm of two or more numbers: For example, to nd the gcf of 12 and 18: Step 1: the prime factors of 12 are 2 x 2 x 3. The prime factors of 18 are 2 x 3 x 3. Step 2: the common prime factors are 2 and 3.
