Metoda lui Gauss
13+14+15+.......+175
Pls, dau fundă!
Urgent!!


Răspuns :

13 + 14 + 15 + ... + 175
= ( 1 + 2 + 3 + ... + 175 ) - ( 1 + 2 + 3 + ... + 12 )
= 175 × 176 : 2 - 12 × 13 : 2
= 175 × 88 - 6 × 13
= 15 400 - 78
= 15 322


Succes !!