Brain Game: Mars Attacks!
Sweet! It's Tuesday Test Time once again here at the mentalfloss.com Brain Game, so let's get right to it. Good luck:
M&M milk chocolate candies (a.k.a. "plain M&M's")
are available via retail in individual-serving packages
featuring 6 different colors of candy shells.
Which 3 of those colors have been part of the
mix ever since the candy's introduction in 1941?