Main content

Today Puzzle #586

Puzzle No. 586– Thursday 10 October

The New Scientist Live festival begins at the Excel centre in London today with 120 talks over 4 days. On average, a talk is 40 minutes long. If you were able to watch every single talk on playback, how many days of 9am to 5pm would it take through the entire set of talks?

Today’s #PuzzleForToday has been set by Bobby Seagull, a school Maths teacher and Cambridge University Doctorate student.

Click here for the answer

10 days.

120 talks x 2/3 hour per talk = 80 hours

9am to 5pm has 8 hours

So 10 days to get through the talks

More fiendish brain-teasers and quizzes on BBC Radio...