Since 42 is a multiple of 2, it is automatically the LCM.
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The least common multiple (LCM) of 2 and 42 is 42.
Because 210 is the smallest number that both 30 and 42 divide into equally with no remainder.
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 4 and 42 is 84.
420Prime Factorization of:42 =...2 * 3 * 770 =...2 .....* 7 * 584 =...2 * 3 * 7......* 2===============LCM = 2 * 3 * 7 * 5 * 2 = 420
The LCM is 42