the period of the decimal 0.12 36bar is
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Step-by-step explanation:
Several numerical sets (that is sets of numbers) are frequently used in mathematics. Here is a diagram showing the relation between them.
The simplest set is the set of Natural Numbers. The letter N is always used when talking about this set. N = {1,2,3,∙∙∙}. These are the numbers we use for counting and they carry on infinitely. Zero is often included in this set . This is shown by putting 0 as a subscript on the N. N0 = {0,1,2,3,∙∙∙}.
The letter Z is used to symbolise the set of all the whole numbers, positive and negative. Z = {∙∙−2,−1,0,1,2,∙∙}.
The set N is a proper subset of Z.
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