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.
There are no numbers between 67 and 113 which are multiples of 65.
Just count the multiples of 6...
33 multiples of 3 10 multiples of 10 -3 multiples of both 40 total
Two.
The numbers that are between 55 and 101 that are also multiples of 3, 10 and 15 are: 60, 75 and 90.
There are 166 multiples of 6 in that range. There are 100 multiples of 10 in that range. There are 33 numbers on both lists. 266 - 33 = 233
An infinite amount.
Multiples of 10 cannot be prime.
There are three: 18, 36, 54.
There are 9*10*9 = 810 such numbers.
80
80.