A stylized numeral 4 or π made up of interconnected gears or cogs, with each cog representing a problem or puzzle to be solved. The design could incorporate geometric patterns and shapes that reflect the complexity and rules of math, with bright colors and bold lines to convey a sense of problem-solving fun.

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A stylized numeral 4 or π made up of interconnected gears or cogs, with each cog representing a problem or puzzle to be solved. The design could incorporate geometric patterns and shapes that reflect the complexity and rules of math, with bright colors and bold lines to convey a sense of problem-solving fun.