Author Archives: thomas

The number that just won’t go away…

The 82000 sequence is still generating interest.

Here’s a great Numberphile video about the sequence from mathematician James Grime:

[youtube http://www.youtube.com/watch?v=LNS1fabDkeA]

The sequence has also made it into the Online Encyclopaedia of Integer Sequences, as A258107!

I have also found an early mention of the special properties of 82000, in this exchange on a French puzzle forum, from October 2008. Continue reading

Tennis: How much is a set worth?

1024px-Serena_Williams_-_Roland_Garros_2013_-_002.
With the men’s final of Roland Garros about to start, I have written a pretty simple piece about how much a set is worth in a tennis match (in probability terms). I have tried to keep the style accessible, as with the Pointless maths articles (although I probably simplified a little too much with those).

Click here to read the article.

The photo is from Yann Caradec via Wikimedia Commons, published Creative Commons: HERE.

The solution to the algebra puzzle…

Untitled presentation

The solution to Puzzle #4 is now up. Either follow the links from the puzzle itself HERE, or, if you have seen the question already, click HERE to go straight to the solution.

As I mentioned previously, I think this is a good puzzle for mathematics learners at GCSE level or for those setting out on A-level courses, both for checking up on basic algebraic understanding and for illustrating some specific problem-solving skills. I have summarised the key learning points that I think the puzzle raises on the solution page.