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Maths

23 people in a room. What are the odds two share a birthday?

Better than half. It asks you first.

DuckyHelper · 0:59 · On X · Nov 1
Inside the film

What it shows

With 23 people in a room, the chance that two of them share a birthday is better than half. The film draws why: 23 people make 253 pairs, and every pair is another chance for a match. Before it gives the answer, DuckyHelper asks what you think first, then shows it on the board.

The DuckyHelper part

In this film, it works the steps out on the blackboard and it asks a question back, so you do the thinking. That is DuckyHelper on any screen: press one key in any app and ask.

  1. Press fn on a Mac, or Ctrl+Shift+Space on Windows and Linux, in any app.
  2. Ask your question out loud, the way you would ask a person next to you.
  3. Watch it explain on your screen or on the blackboard, then answer its question back.
Questions and jobs

Do anything

Ask it a question or hand it a job, in any app.

Doing jobs for you is in early access on Mac. Asking works on Mac, Windows and Linux.