Mekanam poddak waradi macho RGB keyanne 24 Bit image ekak Red Green Blue Chanel 3ne ekatuwa tama RGB hama chanell ekama 8bit ekak so
8Bit X 8Bit X 8Bit = 24Bit
and RGB eke colours teyenne 16.7 Million
eka 8bit channel ekakata colours 256 so,
256 X 256 X 256 = 16.7
CMYK image ekak tama api...