None (Zero)

In mathematics and programming, "None" or "zero" signifies the absence of a value or something that is empty. Zero is a number representing no quantity, like having no apples. "None" often indicates that a variable or data point lacks any value or is undefined. For example, if a person doesn't have any money, we might say their balance is zero. Both concepts help us understand situations where something is missing, empty, or has no measurable amount, providing clarity when analyzing or coding data.