The least common multiple (LCM) is often also called the lowest common multiple or smallest common multiple. Keep in mind that these different terms all refer to the same thing: the smallest positive integer which is a multiple of two or more numbers.
The least common multiple of 1050 and 1400 is 4200.
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It is not possible to give a sensible answer to this question. The least common multiple (LCM) refers to a multiple that is COMMON to two or more numbers. You have only one number in the question!
Prime factor each and use the prime numbers the most it was used in either number.
840=2x2x2x3x5x7
1400=2x2x2x5x5x7
2x2x2x3x5x5x7=4200
The Least Common Multiple (LCM) for 24 30 42 is 840.
The least common multiple of the numbers 30, 40 and 70 is 840.
840
The Least Common Multiple (LCM) for 70 120 is 840.
The LCM of 20, 24, and 28 is 840