This cannot be answered because the common multiples of any two or more numbers are infinite.
The least common factor of 30 and 42 is the smallest number that is a factor of both of them and is 1.However, I suspect that you mean either:What is the highest common factor of 30 and 42?ie what is the highest number that is a factor of both 30 and 42: hcf = 6;What is the lowest common multiple of 30 and 42?ie that is the smallest number that is a multiple of both 30 and 42 lcm = 210.
HCF(30, 36, 42) = 6 LCM(30, 36, 42) = 1260
The Least Common Multiple (LCM) for 24 30 42 is 840.
The least common multiple of 30 , 42 = 210
The least common multiple is 210.
The least common multiple is 210.
6
A common multiple of any two numbers, such as 30 and 42, is a number into which each of two or more number can be divided with zero remainder. Any multiple of 210.
The LCM of 30, 42, and 70 is 210
Least Common Multiple (LCM) for 6 30 42 is 210.
The Least Common Multiple (LCM) of (18,30,42) is 630.
The least common multiple is 210.