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I pick two whole numbers x and y between 1 and 10 inclusive (not necessarily distinct). My friend picks two numbers x-4 and 2y-1. If the product of my friend's numbers is one greater than the product of my numbers, then what is the product of my numbers?

 Sep 6, 2020
 #1
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The product of your numbers is 8.

 Sep 6, 2020
 #2
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Work? How?

CapriSun  Sep 6, 2020

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