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Featured Pro Problems
Find the sum of x and y, if the following quadratic equations in x and y are true.
Two people go to the same store and make the same purchases, but one of them is treated unfairly in the pricing
The sum of two numbers is six more than twice the smaller number, and if the larger number is multiplied by three, the result is ten less than seven...
A hypothetical problem in which the treasury introduces a new coin into circulation
Determine how many floors a skyscraper has, based on information about someone climbing the stairs
What happened after Humpty Dumpty had his shattering fall
Hermie the Elf goes Christmas shopping, but all he has is coins in his pocket
Solve the system of equations which involves a product of variables
Full Directory Listingb Over X + Y, Find X + Y + Z, Fractions within Fractions, P and Q, P and Q, System in a System, System of Equations with K, System of Three Equations, Three Numbers, Three to Two, Ugly Fractional System
Understanding Coronavirus Spread
A Question and Answer session with Professor Puzzler about the math behind infection spread.
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