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  1. 1 (number) - New World Encyclopedia

    1 (one) is a number, numeral, and the glyph that represents the number. It represents a single entity and is commonly regarded as the fundamental unit of counting and measurement. For …

  2. 1 (number) - Simple English Wikipedia, the free encyclopedia

    One (1) is the first natural number, followed by two. The Roman numeral for one is I. Babylonian number 1

  3. Number 1 - Facts about the integer - Numbermatics

    Your guide to the number 1, an odd number which is uniquely neither prime nor composite. Mathematical info, prime factorization, fun facts and numerical data for STEM, education and fun.

  4. 1 - Wiktionary, the free dictionary

    Nov 4, 2025 · 1 (previous 0, next 2) The cardinal number one, a single thing or unit. A digit in decimal and every other base numbering system, including binary, octal, and hexadecimal. 15 …

  5. 1 (number) | Math Wiki | Fandom

    1 is the Hindu-Arabic numeral for the number one (the unit). It is the smallest positive integer, and smallest natural number. 1 is the multiplicative identity, i.e. any number multiplied by 1 equals …

  6. Mathway | Algebra Problem Solver

    Free math problem solver answers your algebra homework questions with step-by-step explanations.

  7. How Long Is 1 Inch? (with 10 Examples) - Measure By

    Conclusion Measuring 1 inch accurately is a crucial skill for various applications, from woodworking to science experiments. By using a ruler, tape measure, or caliper, you can …