Telephone numbers were once assigned letters to make them easier to remember. The letters represented the area the number was assigned to. For example SYcamore 4 or Pennsylvania 6. The letters Q and Z were not included because they were the least common letters to be used.
It is 7
1
60
It is: 20
the GCF is 8
The GCF is 1.
48
-121
The GCF is 2.
The GCF is 1.
the name
they are public, anyone can buy its stocks