According to my knowledge and observation, there are 50 M & M's in a standard package. They are in different colors which are brown, yellow, orange, red, green and blue. Each has the letter m inscribed on them in food color.
In the original pack not like todays the pack was small and we would get 35 to 40 pieces and split it between the four of us,the colors were yellow,orange,red,green,and brown,their were 5 colors back then