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a fost răspuns

cum se calculeaza urmatoarea fractie 1×3×5+3×5×7+5×7×9+...+199×201×203

Răspuns :

AndreeaBacusbea
1×3=3
3×5=15
3×5=15
5×7=35
5×7=35
35×9=315
105×9=945
199×201=39999
39999×203=8119797
15+105+315+8119797
15+105=120
120+315=435
435+8119797=8120232

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