104k views
14 votes
Find the value of 11 +22+33 + ... + 1100.

1 Answer

4 votes

Answer:

sum of terms: 55550

Step-by-step explanation:


\sf S_n = (n)/(2) (u_(start)+u_(end)})

Here the number of terms:

1100 ÷ 11 = 100

Using the Formula:


\sf (100)/(2) (11+1100)


\sf 55550

User Ale Zalazar
by
6.2k points