There are seven numbers - 14, 28, 42, 56, 70, 84, 98
Six numbers
All of the odd numbers between 11 and 99 inclusive are two digit numbers that are not multiples of 2. There are 45 of them.
8 of them.
There is 67
There are 457 such numbers.
Four. 24 and its multiples.
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.
All the multiples of 4 are also multiples of 2.
There are 67 multiples of 6 and 50 multiples of 8 in that range. Their total, 117, will include numbers that are both.
33 multiples of 3 10 multiples of 10 -3 multiples of both 40 total
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
There are 30 multiples of 30 between 100 and 999.
Two numbers
Six numbers
There are 16 multiples of 6 in that range.
There are 83 composite numbers.
8 of them.