x is 987 subtract y is 123 ,which 987-123=864.
It will always be 1.
That depends on the numbers. The GCF of any two prime numbers is 1.
Add the two greatest possible four digit numbers. 9999 + 9999
Yes.
The greatest possible number is 888... (repeating).
25549
1001
Their product.
Check your work. In any given set of numbers, there is only one distinct GCF.
99*99=9801
87603
there are 5 numbers?