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Old June 28th 17, 04:01 PM posted to sci.astro.amateur
Norbert[_5_]
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Posts: 9
Default Which number becomes double when it is divided by itself butbecomes half when it is multiplied by itself?

Le 28/06/2017 Ã* 14:03, StarDust a écrit :
?????

1/2
What do I win ?

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