fermi

Within 10× to survive

Streak 0 · Best 0

How many lines long is Shakespeare’s Hamlet, his longest play?

Type 12k, 3.5 million, 2e9 — or the sum, like 3e6 × 0.2

How to play

Every question asks for a real number nobody knows offhand. No searching: break it into pieces you can picture, multiply, and make your best guess.

Daily

Three questions a day, one guess each. You score how many times off you were, too high or too low: nail it and it’s 1×, half or double is 2×. Your day’s score is the geometric mean of the three, so lower is better. New questions at 00:00 UTC.

Survival

Questions keep coming. Land within 10× of the answer, high or low, to keep going. Your score is how many you survive in a row.

Typing numbers

1,245, 12k, 3.5 million, 2bn and4e9 all work. You can type the sum itself, like 8e9 × 0.3 ÷ 4, or open the calculator keys.

Questions, answers and worked estimates are written for this Playdle edition from published figures; each answer lists its source.

Statistics

Daily

0
Played
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Average
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Best day
0
Streak

    Survival

    0
    Best run
    0
    Runs
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    Last run

    Past puzzles

    Replays don’t count towards your daily streak.

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