math

What is a Natural Number? Definition, Examples & Properties

A natural number is any number used for counting, starting from 1 and going on forever - written as the set N = {1, 2, 3, 4, 5, ...}. They don't include negatives, decimals, or fractions, and whether 0 counts depends on the convention your textbook follows.

Math Terms

math

Median in Maths: Definition, Formula & Examples

The median is the middle value of an ordered data set. For ungrouped data with odd n, it's the ((n+1)/2)ᵗʰ term; for even n, it's the average of the two middle terms; for grouped data, use Median = l + [((n/2) − cf) / f] × h.

Math Terms

math

Rhombus – Definition, Properties, Formulas & Examples

A rhombus is a four-sided shape with all four sides equal in length, opposite sides parallel, and diagonals that bisect each other at right angles. Its area is (d₁ × d₂) / 2 and its perimeter is 4a, where d₁ and d₂ are the diagonals and a is the side length.

Math Terms

math

What is Mode in Maths? Definition, Formula, and Examples

Mode is the value that appears most often in a dataset - 7 is the mode of 4, 7, 7, 9, 12. Unlike mean and median, mode also works on non-numerical data like colors, blood types, or favorite subjects.

Math Terms

math

What is an Irrational Number? Definition, Examples & Properties

An irrational number is a real number that cannot be written as a ratio of two integers (p/q form), and its decimal expansion never terminates and never repeats. Common examples include √2, π, e, and the golden ratio φ.

Math Terms