Răspunsuri

2014-10-16T17:19:11+03:00
5×(1+2+3+4+..........+200) 5×200×201:2 5×100×201 500×201 100 500
2014-10-16T17:21:59+03:00
Este suma lui gaus deci : 
5×(1+2+3+4+..........+200) 5×200×201:2 5×100×201 500×201 100 500 .