An infinite amount.
20 of them.
An infinite number of them.
67 of them.
There are three numbers between 10 and 50 which are divisible by both 3 and 5. All numbers that are multiples of 3 and 5 are the multiples of the lowest common multiples (lcm) of 3 and 5 which is 15. The multiples of 15 between 10 and 50 are {15, 30 and 45}, thus there are 3 numbers.
Three numbers.
No, they are factors of 15. Factors go into numbers, numbers go into multiples.
45 multiples of 2 plus 30 multiples of 3 minus 15 multiples of 6 equals 60 numbers
Many other numbers share some multiples with 15. However, only two numbers share all of 15's multiples: 3 and 5.
Multiples of 810
Numbers which are the factors of thirty and multiples of five are 5, 10, 15 and 30.
Since both 3 and 5 are prime numbers, only numbers that are multiples of its product are the numbers that are divisible by both. 15 is the LCM of 3 and 5 and hence all multiples of 15 are divisible by both 3 and 5
The numbers that are between 55 and 101 that are also multiples of 3, 10 and 15 are: 60, 75 and 90.