Why can't we write the set of real no.s in roster form?(adsbygoogle = window.adsbygoogle || []).push({});

In set builder form, R = {x:x 'belongs to' T or x 'belongs to' Q}

so , if we write one rational no.& one irrational no in a set., that will be the set of real no.s isn't it ?

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# Set of real no.s

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