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Alexandraale27
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46 47 48 puteti face care vreti doar ajutatima daca stiti toate va doau coroana si ma abonez

46 47 48 Puteti Face Care Vreti Doar Ajutatima Daca Stiti Toate Va Doau Coroana Si Ma Abonez class=

Răspuns :

Dragons1305
46. S1=1+2+...+10
S1=10×(10+1):2
S1=10×11:2
S1=5×11
S1=55

S2=1+2+...+100
S2=100×(100+1):2
S2=100×101:2
S2=50×101
S2=5050

S3=1+2+...+1000
S3=1000×(1000+1):2
S3=1000×1001:2
S3=500×1001
S3=502000

S4=1+2+...10000
S4=10000×(10000+1):2
S4=10000×10001:2
S4=5000×10001
S4=50005000



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