This, along with a number of other apparently simple questions, features in a new book by Rob Eastaway. Radio 4′s today programme extracted six of these conundrums and put them into a quick online quiz – suitable for self-declared maths-whizzers of all ages.
Â
The Radio 4Â quiz explains the often surprising (or unsurprising, if you’re a bit clever) answers to the maths questions. Give it a try!
Related posts:
[...] [see also our post on Rob's recent book How Many Socks Make a Pair?] [...]