The picture that graphically represents the items you use in Windows is called an icon.
You should specify what language you're using in these types of questions. Here's an example in C++, which is fairly easy to understand, so you should be able to transfer the concept to another language to problem.
int x = 2, y = 1, z = 3, min;
if (x < y && x < z)
min = x;
else if (y < x && y < z)
min = y;
else if (z < x && z < y)
min = z;
else
std::cout << "There is no minimum";
It's false because that teacher used someone's content without getting the consent of the owner which can also be referred as a unethical work.
AltGr (also Alt Graph) is a modifier key found on many computer keyboards (rather than a second Alt key found on US keyboards). It is primarily used to type characters that are not widely used in the territory where sold, such as foreign currency symbols, typographic marks and accented letters.