Antwort 1.1:3
Aus Online Mathematik Brückenkurs 1
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Version vom 17:18, 22. Okt. 2008
| a) | natural numbers, integers, rational numbers | b) | integers, rational numbers | c) | natural numbers, integers, rational numbers | 
| d) | integers, rational numbers | e) | integers, rational numbers | f) | natural numbers, integers, rational numbers | 
 
		  