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The number π is a mathematical constant. Originally defined as the ratio of a circle's circumference to its diameter.
Vector illustration of mathematics & education concept with "mathematics" study and science icon.
Forex graphs and mathematical formulas. Business trading concept. 3D Rendering
Mathematical instruments over the corner of black paper with copy space for text. Mathematical tools concept.
Math vector seamless texture with handwritten formulas, task solutions and figures. School copybook background
Bright colored, wooden numbers on a blue background.

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