what does a line above a number means

Hi, It means nuber is repeated infinite times x = 2.3= 2.33333.......and y = 2.34= 2.34343434.....Regards

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I have never heard or learnt about 'a line above a number'.
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Where is the line
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It means it is a line segment.  __>
                                                        AB
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It means it is a non-recurring number.
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What are you looking for?