Which mathematical pricing strategy deliberately uses non-round numbers (like $19.99 instead of $20) based on the theory that consumers perceive these prices to be significantly lower?

Pricing is a critical aspect of retail strategy that often relies on mathematical principles to optimize profit margins while appealing to consumer psychology. Different mathematical models inform how retailers set prices, create discounts, and develop pricing tiers. This poll tests your knowledge of how mathematics influences retail pricing strategies that shape consumer buying decisions.

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Psychological pricing (also known as charm pricing)
Dynamic pricing algorithms
Golden ratio pricing
Fibonacci sequence pricing