The answer depends on what the variable r in the question stands for.
No, 30 is not a multiple of 40.
The least common multiple of 8 and 40 is 40. Because 40 is a multiple of 8, it is automatically the LCM of the set.
40 is a multiple of ten.
Least common multiple of 5 10 and 40 is 40.
The Least Common Multiple (LCM) for 5 40 is 40.
40 5 x 8 = 40, so 40 is a multiple of both 5 and 8.
The Least Common Multiple (LCM) of (2, 8 and 10) is 40.
The least common multiple of 4, 5, and 8 is 40.
40 is because 4x10=40 and 8x5=40
The Least Common Multiple (LCM) for 40 49 is 1,960.
40 is a multiple of 4 but not 6
The least common multiple of 43 , 40 = 1,720