48

Understanding uncertainty: How long will you live?

Well, no-one knows exactly, but using stats you can make a good guess. This article tells you how and has an interactive life expectancy calculator. Do you dare to find out?

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Plus Magazine
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Editorial

Election issues

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Outer space: Pretty mean prices
How to keep inflation down
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fruit group
Teacher package: Group theory
This issue's teacher package brings together all Plus articles on group theory, exploring its applications and recent breakthroughs, and giving explicit definitions and examples of groups. It also has some handy links to related problems on our sister site NRICH.
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'An imaginary tale'
Engineers often consider mathematics a necessary evil rather than a pursuit in itself. The author of An imaginary tale, Paul J. Nahin, is therefore a rare find.
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'Mathematics and democracy'
We're in a US election year, and as is usual at such times there is some discussion about the fairness of the voting system.
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'The presidential election game'
If you ever have been (or wanted to be) involved in a school or office council which has to be elected by popular vote, you have a fair idea of the sort of considerations that have to be made.
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'Lewis Carroll in numberland'
Charles Lutwidge Dodgson sat in the bows of a rowing boat and heaved on the oars in time with another young man who sat in front of him.
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'The wraparound universe'
With Einstein's publication of The Foundation of the General Theory of Relativity in 1916 our view of the nature of the Universe was forever altered.
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'How many socks make a pair?'
If you were to seek out books that attempt to popularise maths among the innumerati, you would notice that most give a quick nod to the golden ratio.
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Puzzle page
Do five suffice?
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