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Binary Numbers

Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 examWritten by the Fiveable Content Team • Last updated September 2025

Definition

Binary numbers are a base-2 number system that uses only two digits, 0 and 1, to represent all values. Each digit in a binary number is called a bit.

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