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To find the common multiple of 4, 5, and 9, we need to identify the least common multiple (LCM) of the numbers. First, we find the prime factors of each number: 4 = 2^2, 5 = 5^1, and 9 = 3^2. Next, we take the highest power of each prime factor that appears in any of the numbers: 2^2 * 3^2 * 5^1 = 4 * 9 * 5 = 180. Therefore, the common multiple of 4, 5, and 9 is 180.

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It is a member of the set of numbers of the form 180*k where k is any integer.

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Wiki User

7y ago
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Q: What is the common multiple of 4 and 5 and 9?
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