麻豆官网首页入口 Radio 4 - Today

Today Puzzle #793

6 friends met during the lockdown and arranged themselves in a circle 2 metres apart. What is the furthest distance any two are apart?

Today’s #PuzzleForToday has been set by David Feather a retired maths education lecturer

4 metres. This is the diameter of the circle

From autumn leaves to the magic roundabout: test yourself with our favourite quizzes.
We asked the intelligence agency to set our listeners a code-cracking challenge... Can you solve it?
Quiz: How many of these Mastermind music questions can you answer?

Here's a chance to find out whether your specialist subject on Mastermind could be the entire history of music.
Six conundrums to grapple with, including the Riddle of the Sphinx. Try not to forfeit your life...