There are five cups.
Under each cup is a paint chip, those little colored cards in hardware stores.
There are only RED and GREEN paint chips.
There is AT LEAST ONE red paint chip and NO MORE THAN THREE green paint chips.
Your goal is to pick two of one color card in a row. (Your first pick is revealed to you before you pick the second cup)
There is also an option in which you can pick one cup and the Host tells you what color paint chip is under it... but then you CANNOT pick that cup when you do your two picks.
Figure out the probability of winning (two same-color cards in a row) with and without that extra help option. Does it change?