What Is 24 Points?

This is a two players game played with a poker cards.  Initially,
each take half of the cards (jokers excluded).  Each player put two
cards down so that total of 4 cards are displayed.  Both players
try to be the first to find the answer of 24 using plus, minus,
multiplication and division and each card must be used exactly
once.  For example, if the 4 cards are

  2 3 5 6

then one of the answer would be 6*(5-3+2)=24.  Cards J, Q and K can
be used as 11, 12 and 13 respectively (or not used).  The loser
shall take all the 4 cards.  If both players can't find an answer,
then both take their cards back and put two new cards.  The game
end with one of the player get rid of all of his/her cards.  This
game will definitely improve your math skills and is best suited
for age 9 and up.

The program is very easy to use.  Type "card24 4" to play.  Type
"card24" and return to give more instructions.