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L.C.M. #3 Important Topic 2021 By Lalit Sir


In arithmetic and number theory, the L.C.M least common multiplelowest common multiple, or smallest common multiple of two integers a and b, usually denoted by LCM(ab), is the smallest positive integer that is divisible by both a and b. Since the division of integers by zero is undefined, this definition has meaning only if a and b are both different from zero. However, some authors define LCM (a,0) as 0 for all a, which is the result of taking the LCM to be the least upper bound in the lattice of divisibility.

The LCM is the “lowest common denominator” (LCD) that can be used before fractions can be added, subtracted or compared. The LCM of more than two integers is also well-defined: it is the smallest positive integer that is divisible by each of them.

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