The first 6 multiples of 5 are: 5, 10, 15, 20, 25, and 30.
30, 60, 90, 120, 150
5 + 10+15+20=50 ans
The common multiples of 5 and 6 are the multiples of their lowest common multiple (which is 30), so there are infinitely many common multiples of 5 and 6. The first five are: 30, 60, 90, 120, 150.
The multiples of 5 that are also multiples of 6 are multiples of their LCM. The LCM of 5 and 6 is 30, so the question becomes which multiples of 30 are less than 100? The solution is the numbers: 30, 60, 90
Multiples of 6 are numbers in the 6 times table. So the first 5 multiples of 6 are 6, 12, 18, 24 and 30.
The first 5 multiples of 3 are as follows: 3, 6, 9, 12, 15
The first 6 multiples of 5 are: 5, 10, 15, 20, 25, and 30.
The first five multiples of 6 are 6, 12, 18, 24 and 30. For them to be common, they need to be compared to another set of multiples.
30, 60, 90, 120, 150
90
5 + 10+15+20=50 ans
The common multiples of 5 and 6 are the multiples of their lowest common multiple (which is 30), so there are infinitely many common multiples of 5 and 6. The first five are: 30, 60, 90, 120, 150.
0, 2, 4, 6, 8.0,2,4,6,8 are the first five multiples of 2
6, 12, 18, 24, 30
30,60,90,120,150
There are more than 5 multiples of three, but here are the first 5: * 6 * 9 * 12 * 15 * 18