It's 52
Any multiple of 24 has 2, 3 and 8 as factors which are all positive single-digit integers.
To find the common multiples of 2, 5, and 9, we first list the multiples of each number. The multiples of 2 are 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, ... The multiples of 5 are 5, 10, 15, 20, 25, 30, ... The multiples of 9 are 9, 18, 27, 36, ... The common multiples of 2, 5, and 9 are the numbers that appear in all three lists, which are the multiples of the least common multiple (LCM) of 2, 5, and 9. The LCM of 2, 5, and 9 is 90, so the common multiples are 90, 180, 270, ...
Since 4 is a multiple of 2, all the multiples of 4 will be common.
If you mean: 2, 3 and 9 then they are 18 and 36
30, 60 and 90.
lcm(2, 3, 5) = 30 → 2 digit common multiples are 30, 60, 90.
Use some method which you probably already learned, to find the least common multiple. All the other common multiples are multiples of this least common multiple, so you can multiply the least common multiple by 2, by 3, by 4, etc., to get additional common multiples.
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.
12, 24, 36, 48, 60, 72, 84, and 96 are.
60 numbers
It's 52
the first two common multiples of 15,27 are 135,270
The first two common multiples of 235 is 5 and 47.
There are none.
45 multiples of 2 plus 30 multiples of 3 minus 15 multiples of 6 equals 60 numbers
2