Patent ID: 7243919

Claim:
A method for a plurality of players to play a mathematical card game based on multiplication and division of numbers and having a predetermined termination criteria, said method comprising the steps of: a) providing a deck of cards wherein each of said cards has a numerical value (v) depicted on a face-up side of said card, and wherein a card of value v is present in said deck of cards n times, and n v is a function of possibilities (P v ), where P v =Pm v +Pd v , m v is a multiple of v, d v is a divisor of v, Pm v is the number of possibilities for m v , and Pd v is the number of possibilities for d v ; b) dealing a predetermined number of cards from a deck of numbered cards to each of said players to form a card set for each player, and forming a discard pile by placing at least one of said remaining cards in face up position; c) allowing one of said plurality of players to place a play card in face up position on said discard pile, each said play card having a numerical value that is a multiple or a divisor of a numerical value shown on the face of the discard pile; and d) repeating step (c) until said termination criteria is attained.