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DIY: 24 Game

Explore how to determine if four given numbers can form an arithmetic expression that evaluates to 24 using operations like addition, subtraction, multiplication, and division. Understand the constraints on operations and number usage to implement the 24 game logic.

Problem statement

Suppose you are given an integer list, cards, of length 4. Each one of the four cards contains a number in the range [1, 9]. You have to check if an arithmetic expression formed by an interleaving of these cards with the ...