What is the greatest common factor of 17 and 51

International calls require the use of a country code. many country codes a 3-digit numbers. country codes do not begin with a 0 or 1. there are no restrictions on the second and third digits. how many different 3-digit country codes are possible?

What is the range of the relation in the table below? x y –2 0 –1 2 0 4 1 2 2 0

1. find the area of the unshaded square 2. find the area of the large square 3. what is the area of the frame represented by the shaded region show