Memory Challenge: Letter Frequency

The twelve most common letters in English, in order, are E T A O I N S H R D L U. Old typesetters knew them as etaoin shrdlu. Study them for 20 seconds, then type them back.

Level 1 路 Starter

Letter Frequency

Study the 12 letters for 20 seconds, then type them back in order.

  • 12 letters
  • About 1 minute
  • Pass at 10 of 12

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How to Remember ETAOIN SHRDLU

Split the twelve letters into two words you can say: etaoin and shrdlu. Two odd words are much easier to hold than twelve loose letters.

Then give each word a picture. Etaoin can sound like "eat a coin", and shrdlu like "shredded loo roll". Picture someone eating a coin, then shredding a roll of paper, and the two halves come back in order.

See how other members memorized it in the forum topic for this challenge .

The Challenges

The easiest is first. Each one is harder than the last.

0 of 10 passed

  1. Level 1 路 Starter

    Letter Frequency

    12 letters 路 About 1 minute 路 pass at 10 of 12

    Badge: Quick Study

    This challenge
  2. Level 2 路 Starter

    Zodiac Signs in Order

    12 signs 路 About 2 minutes 路 pass with 2 mistakes or fewer

    Badge: Storyteller

  3. Level 3 路 Starter

    Backwards Alphabet

    26 letters 路 About 1 minute 路 pass by reaching A

    Badge: Rewind

  4. Level 4 路 Intermediate

    Canada's Provinces and Territories

    13 names 路 2 minutes 路 pass at 11 of 13

    Badge: Coast to Coast

  5. Level 5 路 Intermediate

    The 50 U.S. States

    50 states 路 6 minutes 路 pass at 45 of 50

    Badge: State Sweep 路 Practice in US States and Capitals matching game

  6. Level 6 路 Intermediate

    U.S. State Capitals

    10 states a round 路 About 2 minutes 路 pass at 8 of 10

    Badge: Capital Finder 路 Practice in US States and Capitals matching game

  7. Level 7 路 Advanced

    U.S. Presidents in Order

    47 presidencies 路 About 4 minutes 路 pass with all 47

    Badge: Unbroken Chain 路 Practice in US Presidents Memory Game

  8. Level 8 路 Advanced

    Capitals of Europe

    10 countries a round 路 About 2 minutes 路 pass at 8 of 10

    Badge: Border Crosser 路 Practice in Capital Cannon

  9. Level 9 路 Advanced

    The First 20 Elements

    20 elements 路 About 2 minutes 路 pass with all 20

    Badge: Lab Ready 路 Practice in Periodic Panic

  10. Level 10 路 Expert

    100 Digits of Pi

    100 digits 路 About 4 minutes 路 pass with all 100

    Badge: Summit 路 Practice in Guess Pi or Pi Runner

The Answers

Show the answers

E T A O I N S H R D L U

See all the memory challenges.