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They are member of the infinite set of numbers of the form 3108*k where k is an integer.
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.
Common multiples include any multiple of 168.
The LCM is 144. Any multiple of 144 will also be a multiple of 16 and 18.
Any member of the infinite set of numbers of the form 48*k where k is an integer.