# 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:

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?

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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).

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

# The solution to the algebra puzzle…

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.

# New Puzzle

I have put a new puzzle up. Nothing too tough this time. A classic algebra puzzle, which I have found to be pretty good as a test of how well GCSE/A-level students understand some basic points of algebra, while illustrating some important problem solving skills.

#4: Hidden depths…
A classic algebra puzzle.
Published:
02/06/2015
Difficulty: *
Maths knowledge required: GCSE algebra [i.e. 14-16 year olds]. Although KS3 would do…