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Category Archives: Puzzles
Puzzle #9 (Followup): Binary Sudoku and the Limits of Visualization
In Puzzle #9: Island of Games, I described an island where a thousand residents enjoy playing three games: Chess, Checkers, and speedsolving of Rubik’s Cube. Each islander’s skill at each game is assessed with a rating score between zero and … Continue reading
Posted in Graphic Presentation, Puzzles, Visualization
Tagged Anscombe's Quartet, Big Data, Edward Tufte, Kirk Monteverde, Puzzle
5 Comments
Puzzle #7 (Followup): Treasury Island, Part 1
In Puzzle #7: The Mysterious Islands, I told the story of two islands where each individual’s remaining lifespan can be perfectly predicted. The lifespans on Uniformia are evenly distributed, and their average remaining life expectancy will gradually decline over time. … Continue reading
Posted in Bonds, Fun, Math, Puzzles
Tagged Life Expectancy, Puzzle, Weighted Average Life
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Puzzle #8: James Bond
Few know that a scene was cut from the James Bond movie Goldfinger. Bond has been captured by Goldfinger and is strapped tightly to a large turntable. Bond’s feet are at the center of the platter and his head rests … Continue reading
Posted in Bonds, Fun, Math, Puzzles
Tagged Bond Math, Bond Math Puzzle, James Bond, laser blasts, Puzzle
2 Comments
David Brode
David Brode is a financial modeler in Boulder, Colorado. An avid puzzle solver, he found this blog while searching for puzzles online. He was intrigued by the puzzles and was curious to see a kindred spirit in Colorado. David called … Continue reading
Puzzle #7: The Mysterious Islands
Many years ago, a large jetliner crashed into the ocean. No one could ever find the plane or any of its passengers or crew. The outside world did not know that there were many survivors. They made their way to … Continue reading
Puzzle #4: Bond Pricing
Here’s another puzzle I’ve used to teach bond math. It’s not hard, but it requires some understanding of bond concepts that I will explain as we go (I beg the patience of bond mavens). Suppose you are the financial advisor … Continue reading
Posted in Bonds, Fun, Math, Puzzles
Tagged Bond Math Puzzle, Callable Premium Bonds, Finance Math Puzzle, Financial Math, Math, Price to Call, Price to Maturity, Puzzle, Puzzle #4, Yield to Maturity
12 Comments
Puzzle #3: A Better Answer
Puzzle #3 asked for the weighted average life (“WAL”) of the principal payments for a 30year mortgage that is cut short by a balloon payment at 15 years. The following information was provided: $100,000 Principal; 5% Interest Rate; $536.82 Level … Continue reading
Posted in Fun, Math, Puzzles
Tagged Average Life Formula, Cool Graphs, Finance Math Puzzle, Financial Math, Math, Puzzle, Puzzle #3, Weighted Average Life
5 Comments