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Printjmc
prealgebra intermediate
Problem
What is the least common multiple of the first ten positive integers?
Solution
Since divides every integer, we need only find the least common multiple (LCM) of the numbers through . Their prime factorizations are, respectively, . In its own prime factorization, the LCM must have each prime that appears in this list, raised to at minimum the highest power that appears in the list for that prime, in order for it to divide all of the integers from through . Thus, the prime factorization of the LCM is . So the LCM is .
Final answer
2520