Determine the number of colors in the palette at a color depth of 4, 8, 16, 24, 32 bits.

Let i be the color depth and N the number of colors in the palette.
The number of colors in the palette can be found using the following formula:
N = 2 ^ i.
1) for i = 4 bits
N = 2 ^ 4 = 16;
2) for i = 8 bits
N = 2 ^ 8 = 256;
3) for i = 16 bits
N = 2 ^ 16 = 65536;
4) for i = 24 bits
N = 2 ^ 24 = 16777216;
5) for i = 32 bits
N = 2 ^ 32 = 4294967296.