Question

A mysterious card-playing squirrel (pictured) offers you the opportunity to join in his game. The rules are:
To play you must pay him $2.
If you pick a spade from a
shuffled pack, you win $9. Find the expected value you win (or lose) per game.

Answer 1

prob(spade) = 13/52 = 1/4

expected value = (1/4)9 = $2.25

I would gladly play with this mathematically challenged squirrel all day long.

Answer 2

how much will the squirrel expect to have