The number 3
6
3
The number that goes into both 28 and 30 is 2. This is because both 28 and 30 are even numbers, and 2 is the only common factor they share. Additionally, both 28 and 30 can be divided evenly by 2, resulting in whole numbers.
There is no easy way. For example the cube root of 30 is irrational. Now, because 27 < 30 < 64 then, taking cube roots, 3 < cuberoot(30) < 4. But that is as far as it goes! If the number ends with 000 then the cuberoot is a multiple of 10. So that cuberoot(27000) = 10*cuberoot(27) = 10*3 = 30. But there are many numbers ending with 000 between 27000 and 64000 for which this will not work.
... 3.
ninety 90 x 0.3 = 27
It goes: 810/27 = 30 times
The only whole number is 1, because 27 is a prime number.
The HCF of 27 and 80 is 1
1, 3, 9, 27.
The number is 1.
The number 3
The number 1.
3
3
Three times 9 = 27