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What are the lowest numbers with 4 factors?
Six.
What makes this number special 2520?
It is the lowest number that has the first ten counting numbers as factors.
What factors of 25 and 4 are LCM?
All factors of 25 and 4 are lowest common multiples of some numbers. Factors of 25: 1, 5, 25 Factors of 4: 1, 2, 4 eg 25 is lcm of 5 and 25. The only (and thus) lowest common factor of 25 and 4 is 1. Thus the lowest common multiple of 25 and 4 is 100.
What is the lowest common multiple of 4 6 and 11?
To find the lowest common multiple of 4, 6 and 11 you first need to break these numbers down into their prime factors: 4 = 2x2 6 = 2x3 11 = 11 The next step is to identify any common factors. In this case two numbers have a 2 as a prime factor, so we can discard one of these. Take all the other prime factors (2, 2, 3 and 11) and multiply them together: 2x2x3x11 = 132. Thus the lowest common multiple of 4, 6 and 11 is 132.
What do you notice about the numbers that are multiples of both 3 and 4?
They are all even and multiples of 12, which is the lowest common multiple of 3 and 4.
