August 2018 1 59 Report
Ciągi liczbowe
1.Znajdż sumę "n" początkowych wyrazów ciągu: 3, 33, 333, 3333, 33333, .... /wzór/
2. Oblicz wartoś sumy: 1/1x2x3 + 1/2x3x4 + ............
+1/n(n+1)(n+2) Beata J.

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