by NM '20
Solvers of last week’s puzzle (in order):
1. Olivia Vella
2. Alex Knapper
3. David Hla & Manu Kini (tie, 9:06 PM 9/10/18)
6. John Benner
7. Liam Chalk
8. Robert Shekoyan
9. Matthew Bruning
10. Matthew Chalk
11. Yash Somaiya
Answer to and commentary on Puzzle #1.
Classification: Easy. This puzzle was an adaptation of the famous Monty Hall problem. It was to be expected that many viewers had seen the problem before. The correct answer was switch, because the original probability (i.e. 66%) that $10,000 was behind either Door 2 or Door 3 is conferred upon Door 2 once Door 3 was eliminated. Hence, the probability of the $10,000 being behind Door 2 is 66%, compared to only 33% for Door 1, and Jim should switch.
NM (email redacted)
This week’s puzzle: Mathematics. Find the values of ♤, ☗, and ☖. The answers are all positive integers less than 20.