Which psychological pricing strategy is mathematically designed to influence consumer perception by ending prices just below a round number, creating the illusion that an item costs significantly less?

The intersection of mathematics and retail creates fascinating consumer psychology effects. Retailers carefully calculate everything from store layouts to pricing strategies using mathematical models. This trivia question explores how specific numerical concepts influence purchasing behavior and brand perception in the modern retail environment. Test your knowledge about how mathematics shapes consumer decisions!

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Charm pricing (e.g., $9.99 instead of $10.00)
Bundle pricing (e.g., 3 for $12)
Prestige pricing (deliberately using round numbers like $50 or $100)
Dynamic yield pricing (algorithmic price adjustments based on demand)