Question

Calculati:
a)S=2+3+4+...+50=
b)S=1+2+3+...124=

Answer 1

[tex]a)2+3+4+...+50=\ \textgreater \ \frac{50*51}{2} = 1275\\\\ b)1+2+3+..+124=\ \textgreater \ \frac{124*125}{2} = 7750[/tex]

Answer 2

2+ 3+4+50 =59 1+2+3+124 =130