InaThought
Tuesday, March 3, 2015
Wednesday, January 28, 2015
Tuesday, January 27, 2015
Monday, January 26, 2015
Problem 11
What is the greatest product of four adjacent numbers in the same direction (up, down, left, right, or diagonally) in the 20×20 grid?
Wednesday, January 21, 2015
Problem 9
There exists exactly one Pythagorean triplet for which a + b + c = 1000.
Find the product abc.
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