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.
Least Common Multiple (LCM) for 6 30 42 is 210.
The LCM of 30, 42, and 70 is 210
The Least Common Multiple (LCM) of (18,30,42) is 630.
The least common multiple is 210.