Add new comment

Permalink In reply to by Anonymous (not verified)

Clue two is arbitrary to the puzzle as the number is not given. That the salesman asked for 3 clues does not cancel the belief that the woman thought one clue sufficient to begin with. Assuming twins in the population are a rarity and most families have a small spread of years between siblings, I would guess the answer at 1 4 9. This would be the greatest spread that allows clue 3 to make sense when the liklihood of piano lessons being more common for nine year olds than 6 year olds.

Filtered HTML

  • Web page addresses and email addresses turn into links automatically.
  • Allowed HTML tags: <a href hreflang> <em> <strong> <cite> <code> <ul type> <ol start type> <li> <dl> <dt> <dd>
  • Lines and paragraphs break automatically.
  • Want facts and want them fast? Our Maths in a minute series explores key mathematical concepts in just a few words.

  • What do chocolate and mayonnaise have in common? It's maths! Find out how in this podcast featuring engineer Valerie Pinfield.

  • Is it possible to write unique music with the limited quantity of notes and chords available? We ask musician Oli Freke!

  • How can maths help to understand the Southern Ocean, a vital component of the Earth's climate system?

  • Was the mathematical modelling projecting the course of the pandemic too pessimistic, or were the projections justified? Matt Keeling tells our colleagues from SBIDER about the COVID models that fed into public policy.

  • PhD student Daniel Kreuter tells us about his work on the BloodCounts! project, which uses maths to make optimal use of the billions of blood tests performed every year around the globe.