Question

afla valoarea lui y din expresia .y - (1+2+3+........+48)=3520

Answer 1

1+2+3+...+48= $\frac{48* (48+1)}{2} = \frac{48*49}{2}= \frac{2352}{2} =1176.$

y-1176=3520
y=3520+1176
y=4696