Combinatorics, Probability; Difficulty: medium Park your car This week’s Riddler Classic is mainly an exercise in combinatorics. The Classic reproduced: From Dave Moran comes a practical parking puzzle: There’s a
Logic, Geometry, Calculus; Difficulty: Hard How Fast Can You Make The Track? This week’s Riddler Classic is a Brachistochrone curve problem, but with a constraint. The solution can be intuited
Combinatorics, Logic; Difficulty: easy How Many Brackets Can You Bust? This week’s Riddler Classic is once again a counting/logic exercise just in time for March Madness with an interesting extra
Combinatorics, Probability; Difficulty: medium Winning at Italian Solitaire After a tough geometry/calculus question last week, this week’s Riddler Classic is a counting/probability exercise about a version of Italian Solitaire. The
Geometry, Calculus; Difficulty: hard It’s A Star! It’s A Plane! It’s … The Riddler! This week’s Riddler Classic is a geometry question requiring a bit of calculus. The Classic reproduced:
Probability, Calculus; Difficulty: medium Can you take down all the bottles of beer? This week’s Riddler Classic is a probability question based on the popular reverse cumulative song 99 bottles
Logic, Calculus; Difficulty: Easy Can You Fend Off The Alien Armada? The first Riddler of 2023 is a straightforward but interesting resource optimization logic Q. The Classic reproduced: The astronomers
Logic; Difficulty: easy Can everyone potentially meet everyone else? This is yet another easy yet interesting logic puzzle that was sent to me: 9 professionals are at a networking event
Logic; Difficulty: easy Can you win the game of Paper Snake? This is an easy yet interesting logic puzzle that was sent to me: You are playing the two player
Probability; Difficulty: medium World Cup Shuttle Ride I’ve adapted and extended this puzzle from a Winkler question I came across some time ago. The counter intuitive answer makes this interesting.
Probability, Calculus; Difficulty: easy A Reasonably Sliced PBJ This week’s Riddler Classic is a relatively straightforward probability question. The Classic reproduced: I have made a square peanut butter and jelly
Probability, Calculus; Difficulty: medium When Will the Fall Colors Peak? This week’s Riddler Classic is a probability question that requires a bit of calculus for an accurate answer; but the
