A number is a value given to something when it needs to be expressed in numerical notation. Your age is a number and so is the amount of words in the question you just asked.
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When an atom becomes unstable it has had a change in the number of electrons it has. The change may be due to sharing of electrons with another atom. an oxidation number is the number
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Whole numbers are basically any number that is not followed by a decimal or any fractional parts. A whole number is a number that is one distinguished number. For example, 21 and
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Rational an Irrational numbers make up real numbers. Even infinite decimal numbers are real numbers. They are used to measure continuous quantities.
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