Category Archives: Puzzles

The Indisputable Santa Mathematical Advent Calendar
Day 14

Happy 14th of December!

Throughout the month, to accompany the release of our book on the Mathematics of ChristmasHannah Fry & I are tweeting out Christmathsy bits and pieces, one a day, advent calendar style. Assuming we don’t run out of ideas, that is…

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Answers via the comments or on Twitter. All correct answers will be rewarded with deep respect and warm Christmas wishes. Enjoy!

CLICK HERE TO SEE THE WHOLE CALENDAR SO FAR

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The Indisputable Santa Mathematical Advent Calendar
Day 13

Happy 13th of December!

Throughout the month, to accompany the release of our book on the Mathematics of ChristmasHannah Fry & I are tweeting out Christmathsy bits and pieces, one a day, advent calendar style. Assuming we don’t run out of ideas, that is…

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Answers via the comments or on Twitter. All correct answers will be rewarded with deep respect and warm Christmas wishes. Enjoy!

CLICK HERE TO SEE THE WHOLE CALENDAR SO FAR

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The Indisputable Santa Mathematical Advent Calendar
Day 12

Happy 12th of December!

Throughout the month, to accompany the release of our book on the Mathematics of ChristmasHannah Fry & I are tweeting out Christmathsy bits and pieces, one a day, advent calendar style. Assuming we don’t run out of ideas, that is…

As you’ll have gathered, one of the fundamental principles of our book is the absolute and unquestionable truth of Santa’s existence. However, even if you know that the big fellow is real, that doesn’t necessarily mean he’s easy to spot. For example, one of these three is Santa… but which one?

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Answers via the comments or on Twitter. All correct answers will be rewarded with deep respect and warm Christmas wishes. Enjoy!

CLICK HERE TO SEE THE WHOLE CALENDAR SO FAR

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The Indisputable Santa Mathematical Advent Calendar
Day 11

Happy 11th of December!

Throughout the month, to accompany the release of our book on the Mathematics of ChristmasHannah Fry & I are tweeting out Christmathsy bits and pieces, one a day, advent calendar style. Assuming we don’t run out of ideas, that is…

Puzzle time:

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Answers via the comments or on Twitter. All correct answers will be rewarded with deep respect and warm Christmas wishes. Enjoy!

We’ll reveal the answer to Friday’s tough Elfnigma tomorrow, so there’s still time to have a go at that one too.

CLICK HERE TO SEE THE WHOLE CALENDAR SO FAR

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The Indisputable Santa Mathematical Advent Calendar
Day 10

Happy 10th of December!

Throughout the month, to accompany the release of our book on the Mathematics of ChristmasHannah Fry & I are tweeting out Christmathsy bits and pieces, one a day, advent calendar style. Assuming we don’t run out of ideas, that is…

Puzzle time!

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Answers via the comments or on Twitter. All correct answers will be rewarded with deep respect and warm Christmas wishes. Enjoy!

There’s a couple of days before we reveal the answer to the tough Elfnigma from yesterday, so there’s still time to have a go at that one.

CLICK HERE TO SEE THE WHOLE CALENDAR SO FAR

The Indisputable Santa Mathematical Advent Calendar
Day 9

Happy 9th of December!

Throughout the month, to accompany the release of our book on the Mathematics of ChristmasHannah Fry & I are tweeting out Christmathsy bits and pieces, one a day, advent calendar style. Assuming we don’t run out of ideas, that is…

[EDIT: Two variants of this puzzle can be found HERE.]

Today, a tougher puzzle. We’ll give you the whole weekend to work it out. Solution on Monday…

day_8

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The Indisputable Santa Mathematical Advent Calendar
Day 7

Happy 7th of December!

Throughout the month, to accompany the release of our book on the Mathematics of ChristmasHannah Fry & I are tweeting out Christmathsy bits and pieces, one a day, advent calendar style. Assuming we don’t run out of ideas, that is…

Another mini-puzzle today:

day_9

Answers via the comments or on Twitter. All correct answers will be rewarded with deep respect and warm Christmas wishes.

Enjoy!

CLICK HERE TO SEE THE WHOLE CALENDAR SO FAR

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The Indisputable Santa Mathematical Advent Calendar
Day 6

Happy 6th of December!

Throughout the month, to accompany the release of our book on the Mathematics of ChristmasHannah Fry & I are tweeting out Christmathsy bits and pieces, one a day, advent calendar style. Assuming we don’t run out of ideas, that is…

Another puzzle today:

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And take note of this observation from Michael Baym:

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The Indisputable Santa Mathematical Advent Calendar
Day 4

Happy 4nd of December!

Throughout the month, to accompany the release of our book on the Mathematics of ChristmasHannah Fry & I are tweeting out Christmathsy bits and pieces, one a day, advent calendar style. Assuming we don’t run out of ideas, that is…

Today, a mini-puzzle:

day_3

DON’T FORGET, you still have until midnight tonight (Sunday) to enter our competition

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The Indisputable Santa Mathematical Advent Calendar
Day 2

Happy 2nd of December!

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Throughout the month, to accompany the release of our book on the Mathematics of ChristmasHannah Fry & I are tweeting out Christmathsy bits and pieces, one a day, advent calendar style. Assuming we don’t run out of ideas, that is…

Today’s advent offering is a quick puzzle. Answers via the comments or on Twitter. All correct answers will be rewarded with deep respect and warm Christmas wishes.

Also, there’s still a couple of days to enter yesterday’s competition.

Enjoy!

CLICK HERE TO SEE THE WHOLE CALENDAR SO FAR