Probability; Difficulty: easy Can You Hand Out All The Candy? This week’s Riddler Classic is a relatively easy Stochastic Optimization question. The Classic reproduced: For Halloween this year, you have
Probability; Difficulty: medium Probability of exactly one winner in the fifth round This week’s Riddler Classic is a conditional probability question. The Classic reproduced: A thousand people are playing Lotería, also
Logic ; Difficulty: Easy Can you keep your marbles? This week’s Riddler Classic is an easy logic problem about 4 bags of marbles whose solution is easily generalized to n
Probability ; Difficulty: medium How many balls in the urn? This week’s Riddler Classic is a statistical parameter estimation exercise. The Classic reproduced: This week’s Classic may seem nonsensical at
Probability ; Difficulty: hard Can you catch the Grasshopper? This week’s Riddler Classic features a grasshopper whose position on a log is only probabilistically determined (a quantum grasshopper?). The Classic
Pobability; Difficulty: easy A Sandy Puzzle The Riddler Classic from this week (Jun 3rd, 2022) at first glance might appear to be a geometry /alegbra/calculus problem; but is a straightforward
Pobability; Difficulty: medium How likely are you to win this game? The Riddler Classic from this week (May 13, 2022) is probability exercise involving tetrahedral dice. While the main question
Pobability; Difficulty: medium How many gems will you purchase to make it in this game? The Riddler Classic from this week (Apr 22, 2022) is probably an exercise of the
Logic; Difficulty: easy Can a leader get people to vote to make him(her)self richer? Puzzle worm Sandi Sandman sent me this simple yet interesting puzzle. Interesting because it offers a
Probability; Difficulty: easy Escaping the Eccentric Elevator I’ve adapted this probability puzzle from one that I came across some months ago. Edit: This submission also made to the FiveThirtyEight Riddler
Logic; Difficulty: easy Are you Mediocre Enough To Win? The Riddler Classic from this week is an easy but interesting game theory/strategy question that illustrates the idea of Nash Equilibrium.
