The lowest common factor of 140, 150, and 180 is 10. To find the lowest common factor, you can first find the prime factors of each number (140 = 2^2 * 5 * 7, 150 = 2 * 3 * 5^2, 180 = 2^2 * 3^2 * 5). Then, identify the common prime factors and multiply them together. The highest common factor of these numbers is 10, as it is the largest number that can evenly divide all three numbers without leaving a remainder.
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The common factors of 120 and 140 are: 1, 2, 4, 5, 10, and 20
140
The common factors are: 1, 5, 7, 35
The common factors of 140 and 210 are: 1, 2, 5, 7, 10, 14, 35, and 70
The Least Common Multiple (LCM) for 14 20 is 140.