All nonzero numbers have an infinite amount of multiples.
1 and 2
1 and 1
109 whole numbers greater than 9 and less than 999 are multiples of 9
Odd multiples of 7 less than 50 are numbers that are both odd and divisible by 7, and are less than 50. The odd multiples of 7 less than 50 are 7, 21, and 35. These numbers are odd because they are not divisible by 2, and they are multiples of 7 because they can be divided evenly by 7.
Prime and odd numbers
3. All other multiples of 3 are not prime.
There are 3 such numbers: 30, 60, 90.
Their sum is 1200.
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
5, 10, 15, 20
The following numbers are multiples of 4: 52 56 60 64 68
50