This holiday-themed brainteaser looks simple, but it's quietly tripping up adults everywhere. A math teacher walks us through ...

A version of this puzzle originally appeared in the October 1960 issue of Scientific American. What’s the Most Distant Galaxy ...

Neil Saunders, City St George's, University of London Here are the answers to the festive maths quiz I set on3. I hope you ...

Here, count with me: 1, 2, 3, 4, 5, 6, 7, 8, 9, T, 11, 12 … Oh, what’s that? You write ten with “zero”? Fair enough. Zero, we have been told, is the ...

What’s more, doing maths is often a collaborative endeavour – and can be a great source of fun and fulfilment when people ...