To enumerate things of which there are very many. Depending on what you consider to be large: the world population (around 7 billion), the US national debt (USD 17.5 trillion), number of atoms (or molecules) in 1 mole of a substance (6.022*10^23 or 602.2 sextillion), number of stars, and so on.
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No, it is not. In many branches of science it is necessary to deal with numbers which are very large or very small and scientific notation is used to represent such numbers more easily.
Because of the very large (and sometimes very small) numbers involved.Because of the very large (and sometimes very small) numbers involved.Because of the very large (and sometimes very small) numbers involved.Because of the very large (and sometimes very small) numbers involved.
It is not always necessary. Scientific notation (also called standard form or exponential notation) is a way of writing numbers that accommodates values too large or small to be conveniently written in standard decimal notation.
Scientific notation is useful for writing moderately large and small numbers. But, even that will not cope with the seriously big numbers.
large numbers