A number expressed in base-2 using only the digits 0 and 1, fundamental to computer science and digital electronics.
The binary number system (base-2) uses only 0 and 1. Every digital device — from smartphones to supercomputers — processes data as binary.
Binary 1011 = 1×2³ + 0×2² + 1×2¹ + 1×2⁰ = 8 + 0 + 2 + 1 = 11 in decimal.
0+0=0, 0+1=1, 1+0=1, 1+1=10 (carry 1). Same logical rules for multiplication.
A number expressed as a fraction of 100, used to describe proportions and rates of change.
A measure of the spread or dispersion of a data set from its mean (average).
Three measures of central tendency used to describe the center of a data set.
A fundamental relation in geometry: the square of the hypotenuse equals the sum of squares of the other two sides.
Area measures the surface inside a shape (in square units); perimeter measures the distance around it.
A number representing a part of a whole, written as a numerator over a denominator.