24-hour calculator

1. The 24 Game is a mathematical game in which you use addition, subtraction, multiplication, and division—including parentheses—to combine four integers so that the final result is 24.

2. The four numbers must be greater than 0 and less than 13. The order of the numbers does not matter; you can use parentheses and perform arithmetic operations to arrive at a result of 24.

3. When playing with a deck of cards, select any four cards from a standard deck (excluding the Jokers). Use addition, subtraction, multiplication, and division (including parentheses) to calculate the sum of the card values to 24. Each card may be used only once.

4. Example: With the numbers 3, 8, 8, and 9, the following formulas can be used: (9–8) × 8 × 3; 3 × 8 ÷ (9–8); (9–8 ÷ 8) × 3;