Register
What is the sum of the series? 20 sigma (5-n) n-1 A-220 B-110 C-95 D110
208k views
2 votes
What is the sum of the series?

20
sigma (5-n)
n-1

A-220
B-110
C-95
D110

User Faheem
by
8.3k points

1 Answer

6 votes

\bf \sum\limits_(n=1)^(20)~5-n\implies \sum\limits_(n=1)^(20)~5~~-~~\sum\limits_(n=1)^(20)~n\implies 20\cdot 5~~-~~\cfrac{20(20+1)}{2} \\\\\\ 100~~-~~210\implies -110
User Nistor Alexandru
by
8.2k points
← Prev Question Next Question →

Related questions

User ATP
asked Apr 24, 2024 156k views
Lead crystallized in FCC structure and it has a lattice constant of 4.95 A* Calculate the interplaner spacing d110, d111
ATP asked Apr 24, 2024
by ATP
7.8k points
1 answer
3 votes
156k views
User Folabi
asked Feb 15, 2019 213k views
What is the remainder when (4x3 + 2x2 − 18x + 38) ÷ (x + 3)? A2 B96 C12 D110
Folabi asked Feb 15, 2019
by Folabi
7.9k points
2 answers
5 votes
213k views
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Other Questions

How do you can you solve this problem 37 + y = 87; y =
What is .725 as a fraction
How do you estimate of 4 5/8 X 1/3
A bathtub is being filled with water. After 3 minutes 4/5 of the tub is full. Assuming the rate is constant, how much longer will it take to fill the tub?
A dealer sells a certain type of chair and a table for $40. He also sells the same sort of table and a desk for $83 or a chair and a desk for $77. Find the price of a chair, table, and of a desk.
Link Copied!