36 and 72
The multiples of 4 up to 30 are: 4, 8, 12, 16, 20, 24, 28.
I think you probably have your terms mixed up. You meant to ask, "What numbers are multiples of 3 and 4?". This answer would be anything that is divisible by both 3 and 4.Ex: 12, 24, 36 ect.There are no common factors of 3 and 4. A common factor would be a number that both numbers are divisible by. An example of this would be the numbers 12 and 30. The common factors of 12 and 30 are: 2, 3, and 6.
100 is the least common multiple of 20 and 25.
To find common multiples you first need to break up the numbers into their prime factors. In this case: 4=2x2 9=3x3 12=2x2x3 The next step is to identify common factors and discard the duplicates. Two numbers have two 2s so we can discard two of these. Also, two numbers have a 3, so we can discard 1 of these. That leaves us with 2, 2, 3 and 3. Multiply these together for the LCM: 2x2x3x3 = 36 To find other multiples, you simply multiply the LCM by 1,2,3 etc. So the first three common multiples are 36, 72 and 108.
Since the LCM is 12 then the common multiples are multiples of 12 12, 24, 36, 48
Look at the multiples of 6. The smallest and greatest multiples of 6 that can be divided evenly by 4 are 12 and 48. So the common multiples of 4 and 6 up to 50 are 12, 24, 36, and 48.
Any number between 1 and 50 can be a common multiple.
21 and 42 are.
24,48,72,96
No - common multiples of 4 & 12 up to 100 are... 12, 24, 36, 46, 60, 72, 84 & 96
15, 30, and 45 .
The multiples of 3 up to 50 are: 3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48
0 The positive multiples are: 6, 12, 18 & 24. Also, all the negative multiples of 6!
10, 20, 30, 40, 50, 60
4, 8, 12, 16 and 20
36 and 72