?-bit Grayscale

1 Bit = Black and White Palattes
2 Bits = 4 Gray Palattes
3 Bits = 8 Gray Palattes
4 Bits = 16 Gray Palattes
5 Bits = 32 Gray Palattes
6 Bits = 64 Gray Palattes
7 Bits = 128 Gray Palattes
8 Bits = True Grayscale