7.5
An even number can be divided by 2 evenly. An odd number will have a remainder of 1 when divided by 2. 900 is an odd number.
Both can be divided by their highest common factor which is 1
900
450, 675, 900 ...
An infinite number of numbers can be divided by 450. The smallest two numbers that can be divided by 450 are 450 (450 divided by 450 equals 1) and 900 (900 divided by 450 equals 2).
900
900
900
It is: 900
900 divided by 4 = 225
0.8889