Multiple choice general knowledge math & puzzles

complete the logical series... attometer, fermi, picometer, _____.

  1. meter

  2. micron

  3. kilometer

  4. nanometer
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The series follows metric prefixes in increasing order of magnitude: attometer (10^-18), femtometer/fermi (10^-15), picometer (10^-12). The next logical step in the standard SI sequence (increasing by factors of 10^3) is nanometer (10^-9).

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