Search | New Scientist

Skip to content

Puzzle #204: Can you work out what number my son thought of?

Puzzle #204: Can you work out what number my son thought of?

11 January 2023

Can you solve this week’s arithmetical puzzle, Think of a number? Plus the answer to puzzle #203

Sign up to our weekly newsletter

Receive a weekly dose of discovery in your inbox. We'll also keep you up to date with New Scientist events and special offers.

Sign up