Which retail innovation strategy first allowed customers to test complex mathematical software before purchasing, dramatically transforming the sales of advanced mathematics programs in the 1990s?

The retail landscape for mathematical products has evolved dramatically in recent decades. From basic calculators to advanced computational software, mathematical tools have transformed how students, educators, and professionals engage with complex concepts. This trivia question focuses on a significant retail innovation that revolutionized how mathematical products are marketed and sold to consumers.

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Interactive kiosks with problem-solving demonstrations
Mail-order catalogs with detailed computation examples
Television shopping networks featuring mathematician hosts
Limited-time rental programs with money-back guarantees