28, 56, 84
you can always find a common multiple of two numbers by multiplying them (but that won't always be the least common multiple)... the other common multiples can b found by multiplying that number with any other positive integer...
for example, if you have two numbers (a and b), then one of their common multiples is a x b (but not always the smallest one), and the others are 2 x a x b, or any other positive integer times a x b
The lowest common multiple is 18. The first four common multiples are thus the first four multiples of 18 and are: 18, 36, 54 and 72.
ANSWER: 12
The first five multiples of 4 are 4, 8, 12, 16 and 20. For them to be common, they need to be compared to another set of multiples.
90, 180, 270, 360, 450 28, 56, 84, 112, 140
14, 28, 42
693, 924.
28, 280, 2800
28, 56, 84, 112, 140.
Multiples of seven include 7, 14, 21, 28, 35, 42, 49 and so on. For them to be common, they need to be compared to another set of multiples.
The lowest common multiple is 18. The first four common multiples are thus the first four multiples of 18 and are: 18, 36, 54 and 72.
The four multiples of seven are 7, 14, 21, and 28.
The common multiples of four start with the lowest common multiple. One times four is four. From there multiply four by two to get another multiple, eight. Other common multiples include 12,16,24,36,40,44, and 48.
28, 56, 84, 112, 140.
84
Multiples of 8 include 8, 16, 24 and 32. For them to be common, they need to be compared to another set of multiples.
Any multiple of 21.
All multiples of 4; 4, 8, 12 and so on.