41.7k views
4 votes
Find the sum 49+50+51+52+...+141+142

2 Answers

4 votes

Answer:

probably 9711

Explanation:

User Ispas Claudiu
by
4.0k points
4 votes

Answer:

8977

Explanation:

Hello,


49+50+51+52+...+141+142\\\\=(48+1)+(48+2)+(48+3)+(48+4)+...+(48+93)+(48+94)\\\\=48* 94+(1+2+3+4+...+93+94)\\\\=48* 94 + (94* 95)/(2)\\\\=47(48* 2+95)=47* 191=8977

thanks

User Joji
by
3.8k points