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Un article trouvé pour ce sujet.
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Rationals, irrationals and integers |
2000-03-14 |
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Erin McKeon pose la question :
Why does the letter J represent the set of integers, the letter Q represent a set of rational numbers and the letter P represent a set of irrational numbers? What do each of these letters stand for?
Harley Weston lui répond. |
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