Binary numbering uses which base?

Binary numbering uses which base?

• A. Base 2
• B. Base 8
• C. Base 10
• D. Base 16

Answer: (A)

Binary numbering uses a base of two, meaning numbers are formed with only two digits: 0 and 1. Each position represents a power of two, starting from the rightmost bit as 2^0, then 2^1, and so on. This base is foundational for digital systems because electronic states are naturally on/off, which map cleanly to 1s and 0s. The other bases differ in how many digits are available and how those digits are grouped: base eight uses digits 0–7 and groups bits in threes; base ten uses digits 0–9; base sixteen uses digits 0–9 and A–F and groups bits in fours.

Binary numbering uses a base of two, meaning numbers are formed with only two digits: 0 and 1. Each position represents a power of two, starting from the rightmost bit as 2^0, then 2^1, and so on. This base is foundational for digital systems because electronic states are naturally on/off, which map cleanly to 1s and 0s. The other bases differ in how many digits are available and how those digits are grouped: base eight uses digits 0–7 and groups bits in threes; base ten uses digits 0–9; base sixteen uses digits 0–9 and A–F and groups bits in fours.