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Natural numbers are the simplest form of numbers used for counting and ordering. They include all positive integers starting from zero, following the sequence 0, 1, 2, 3, 4, and so forth. This sequence is infinite, meaning it extends infinitely without end. Rather than focusing solely on these basic integers, it's important to acknowledge that numbers can be classified into different categories, including integers, rational numbers, real numbers, and imaginary numbers. However, this article will specifically concentrate on natural numbers.