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2014-11-06T17:48:33+02:00
(a1+a2+...+a99+a100)/100=33,4
a1+a2+...+a100=33,4*100=3340
a1a2+a3+...+a99+370=3340
a1+a2+...+a99=3340-370=2970
Ma=2970/99=30
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