An integer is a whole number, either positive, negative, or zero, without any fractional or decimal parts.
Integers are a fundamental concept in mathematics and include numbers like -3, -2, -1, 0, 1, 2, 3, and so on, extending infinitely in both the positive and negative directions.
They are used in various mathematical operations, equations, and real-life scenarios, making them essential in arithmetic and algebra.
Integers are distinct from rational numbers (which can have fractions or decimals) and are often used in counting, measurement, and solving mathematical problems.