mbpinto1234
mbpinto1234 mbpinto1234
  • 02-07-2020
  • Mathematics
contestada

Find the sum of the digits of the number 6+66+666+6666 + ... +666...66, where the last number contains 100 digits.

Respuesta :

JK94 JK94
  • 02-07-2020

Answer:

30300

Step-by-step explanation:

Actually, se have an arithmetic progression:

6, 12, 18, 24... 600

[tex]S = \frac{(6 + 600).100}{2} \\\\ S = (6 + 600).50 \\\ S = 300 + 30000 \\\ S = 30300[/tex]

I hope I've helped you.

Answer Link

Otras preguntas

Write an equation for the function that includes the points (-2,4) and (-1,8)
helppppppppp id.k this
The radius of the planet Saturn is 945% of the radius of Earth. What is 945% expressed as a fraction and as a decimal? PLZ HELP(don't send link and there no pho
28 days until I'll be going to triton High school check
find the solution for 4x+6y=16 -7x+2y=-3
Which of the following protocols help IP in multicast service?Select one:ORARPO CMPO ARPO IGMP​
help please i need this really bad
I need an answer and fast plz A survey of a group of seventh-graders and a group of teachers at a local middle school asked how many siblings they each have. Th
f(x)=2x^ 2 +9x Find f(10)
How long does it take for average sized male to remove all the alcohol from from their body from 1 drink