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Think in Odds

Work out the odds in a daily probability puzzle.
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What is Think in Odds?

Think in Odds is a daily probability puzzle that asks you to work out the odds from a clearly stated scenario. Each day brings one new puzzle, with an archive of past puzzles available. The site emphasizes clear assumptions and careful reasoning over guessing.

How to play Think in Odds

To play, read the day's probability scenario and its stated assumptions, then work out the odds before checking the answer. You can reason on your own, use the optional reasoning box, ask for a hint, or reveal the solution. A new puzzle goes up at 8 p.m. Eastern each day.

Tips & strategy

  • Read the assumptions very carefully; small wording details often change the probability.
  • Identify the full sample space before calculating, especially when times, distances, or other continuous ranges are involved.
  • For geometric probability questions, try drawing a diagram or a coordinate square to visualize the meeting or overlap region.
  • Check edge cases, such as arrivals exactly at the start or end of a window, to make sure your formula includes them.
  • If you're stuck, use the hint or reread the assumptions before revealing the solution.

Frequently asked questions

How often is a new puzzle released?

One puzzle is released daily, with a fresh puzzle appearing at 8 p.m. Eastern.

Can I play older puzzles?

Yes, the site includes an archive of past daily puzzles.

Can I get the puzzle by email?

Yes, you can subscribe to get the daily email. The site notes that you confirm by email and can unsubscribe at any time.

What if I get stuck on a puzzle?

The site offers a 'Give me a hint' option, and you can also reveal the solution after working through the problem.

Where to play

Play Think in Oddsthinkinodds.com · free, new puzzle daily
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