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What is the greatest common factor of 630 and 840?
210
What is the highest common factor of 120 and 168?
6
What is the least common factor of 3 5 7 and 8?
The least common factor of any group of two or more numbers is always 1. The greatest common factor of 3, 5, 7, and 8 is also 1. The least common multiple (LCM) is the multiple of the highest power of prime factors in two or more numbers. Example: LCM of 3, 5, 7, and 8 is 840, which is the multiple of the highest power of all their prime factors, 23 x 3 x 5 x 7.
What are the common multiples of 120 and 210?
840
What is the LCM of 12 28 40 using prime numbers?
Well, let's paint a happy little picture with prime numbers! To find the Least Common Multiple (LCM) of 12, 28, and 40, we first break down each number into its prime factors: 12 = 2^2 * 3, 28 = 2^2 * 7, and 40 = 2^3 * 5. Then, we take the highest power of each prime factor that appears in any of the numbers, which gives us 2^3 * 3 * 5 * 7 = 840. So, the LCM of 12, 28, and 40 using prime numbers is 840.
