Question

care este formula Lui gauss pentru nr pare si exemple

Answer 1

2+4+6+...................................+96=

2·(1+2+3+..............................+48)=2·(48+1):2=

                                                       = 2·49:2

                                                       =49

2+4+6+.....................................+.56=

2+4+6+........................................+66=

2+4+6+..........................................98=

2+4+6+..........................................100=