Four: 1, 2, 3, 6.
18
There are 18.
1,2,3,6,9 & 18 !
1 3/18 to find that out: how many times does 18 go in 21 -once then you have 3 left over so it would be one whole and three parts of eighteen one and three eighteens
7 two-digit numbers.
18 of them.
18
no
200000000
Greatest Common Factor refers to whole numbers, not fractions. The simplest form of 14/18 is 7/9.
If you meant what whole numbers can you use to multiply to 18, there's 9x2, 6x3, and of course 1x18 but you could multiply any number[s] to 18
Exactly 18 whole times with nothing left over.