How To calculate 1+2+3+4+5+6+7+8+9+10 quickly

1+2+3+4+5+6+7+8+9+10= 55. Is there a quick formula to calculate those kinds of sums?

Yes. There is a story about Isaac Newton. When he was in school, the teacher asked the pupils to sum up the numbers from 1 to 100. All the pupils began adding up the numbers 1 by 1, but Isaac thought for a minute and then put up his hand. He said "The sum is 5050". Astonished, the teacher asked him how he go the answer so fast. Isaac said, "well I added 1 to 100 and got 101, then I added 2 to 99 and got 101, the I added 3 to 98 and got 101. I figured out there must be 50 such pairs, so I multiplied 101 by 50 and got 5050".

Given that; 1+2+3+4+5+6+7+8+9+10 = 25

The quick formular is to apply Isaac Newton.

1+10=11

2+9=11

3+8=11

4+7=11

5+6=11

(5 pairs)

Therefore 5 multiple by 11 is equal to; 55

So if you want the sum of numbers in sequence starting from 1, if there are n numbers, the sum is

(n + 1) * n/2

For example, 1 to 8:

9 X 4 = 36

For 1 to 9:

10 X 4.5 = 45

for example:

calculating the sequence of 9, would be 1+2+3+4+5+6+7+8+9= 45

For 5 would be 1+2+3+4+5= 15

For 8, it would be= 1+2+3+4+5+6+7+8= 64

Use the above menthol to solve these examples in the comment box. Let see if you can get it right correctly

What others method can you use to solve this problem quickly? Comment below

Comments

This painting, depicting a young woman nursing an elderly man in a prison cell, was sold for € 30 million

This painting, depicting a young woman nursing an elderly man in a prison cell, was sold for € 30 million. It is the story of a woman, Pero, who secretly breastfeeds her father, Cimon, after he was imprisoned and sentenced to starvation for stealing a loaf of bread during the reign of Louis XIV in France. She is discovered by a guard, but her act of generosity impresses the responsible officials who allow her father freedom, and is portrayed as a great act of pity. This piece of history focuses on how deep a woman's compassion is in our daily life that men often tend to overlook. Bernardino Mei (1612 - 1676). UNDILUTED RELELATIONSHIP GIST, INFORMATION AND EDUCATION: Having a good listener can really help. We want to hear what you're going through. Chat with us today when you need. You Don't have to journey alone. Fill in the comment box below and one of our mentors will respond as soon as possible. It's confidential and always free. UNDILUTED RELELATIONSHIP GI...

From Chantal Uren. This is my story

From Chantal Uren. This is my story... My name is Chantal, I'm a 37 year old Police Officer from Western Australia and I had a severe reaction after receiving the Pfizer vaccine. To the people who threatened me with defamation charges and disciplinary action for telling my story, I am disappointed. I'm disappointed that your priority is to silence me for your own ego and agenda rather than ask if I'm ok and offer me any help! At no time have you asked if I'm ok or cared for a second about my health or welfare. You decided that putting me under more stress, when that stress can cause further risk to my life is your priority. It makes me question humanity and how any person can have such a lack of empathy towards another. If defamation and disciplinary action is what you deem suitable than I'm not afraid. I've done nothing wrong, I did what you wanted and look what happened. No one has the right to take away anyone else's experiences or tell them how they sho...

10 Countries That Preferred Male Child to female Child

List Of Countries That Preferred Male Child to female Child In many cultures, male offspring are desired in order to inherit property, carry on the family name and to provide support for parents in old age. There is a preference of parents to have a son over a daughter in many countries. This can be observed through sex ratios of children in various countries. Although biologically the sex ratio of children is around 95 girls to every 100 boys, this number generally evens out due to the higher infant mortality rate of boy infants. Scholars argue that the expected birth sex ratio in a normal population is in the range of 103 to 107 males to females at birth Below are the countries that preferre male Child to a female Child 1. India In a country like India, generally parents do not want a girl child and got to the extent of killing them in womb or after birth. Parents prefer to have a kid that is less problematic as it grows, gives them better returns ...

Inside California Alligator Farm where kids could ride and play with alligators, 1920s

Inside California Alligator Farm where kids could ride and play with alligators, 1920s Between 1907 and 1953, patrons of Los Angeles' California Alligator Farm mingled freely with trained gators — and sometimes even ate lunch with them.⁠ ⁠ Experience more of the strangest photos from the archives of history and learn the fascinating stories behind them by visiting the link in our profile.⁠ In 1907, Joseph “Alligator Joe” Campbell and Francis Victor Earnest Sr. relocated an alligator farm in Hot Springs, Arkansas, to a Los Angeles location adjacent to the Selig Zoo and Motion Picture Studio in Los Angeles. The Alligator farm rented reptiles to the motion picture industry. The farm moved to Buena Park in Orange County in May 1953 and continued to operate as California Alligator Farm until 1984, when its lease was not renewed Four buildings on the farm contained more than 100 displays of snakes and lizards from throughout the world. The farm contained snapping turtles, giant tortoises...

How To Fix A Broken Relationship

Hurt is inevitable in significant relationships. Yet pain and strife do not have to mean a relationship is going to end. Many couples find that working through trouble actually makes their relationship even stronger. What they realize is that all relationship require work, love, and patience to succeed, and this is especially true when trying to mend a broken relationship. 1. Determine if the other person wants to fix the relationship. There is no sense in trying to fix something if you are the only one willing to do the work. If your partner is unapologetic for mistakes, dismissive of your desire to talk, or continues hurtful behavior, it might be time to move on. It takes two people to mend a broken relationship. If you are the only one trying to save things then you will never succeed. 2. Determine why the relationship is in trouble. All relationships go through rough patches at one point or another. As the novelty of your first few months together wears off, problem...

How “Lobster Boy” Grady Stiles Went From Circus Act To Murderer

How “Lobster Boy” Grady Stiles Went From Circus Act To Murderer For more than a century, a peculiar physical condition known as ectrodactyly has afflicted the Stiles family. The rare congenital deformity makes hands look like lobster claws as the middle fingers are either missing or seemingly fused to the thumb and pinky.⁠ ⁠ While many may have viewed this condition as a handicap, for the Stiles family it spelled opportunity. As the family grew and produced more children with unusual hands and feet, they developed a circus: The Lobster Family, which became a carnival staple throughout the early 20th century. But one of their children, Grady Stiles Jr., would give the Stiles family a different, morbid reputation when he became a serial abuser and murderer.⁠ ⁠ Go inside the haunting crimes of "Lobster Boy" by clicking the link in our profile.⁠ Discover how "Lobster Boy" Grady Stiles got his "claws" and how he eventually began using them to commit murder. For...

How I Spent My Last Christmas Holiday

How I Spent My Last Christmas Holiday I spent my 2019 Christmas holiday in a dramatic way. It was like Nollywood movie. During The 2019 Christmas period, the economy of the country(Nigeria)was not friendly, Cost of living was very high and individual need to strike very hard to survive. It was my worst Christmas Holiday. The president of the country Nigeria ( 2019 Nigeria President) banned importation of Rice and other importation of food items. As if that was not enough, he went on to close border. His reason was that, he want the citizens of the country to go into agriculture especially for Rice production. I couldn't imagine the need Why he make such decision on Christmas period. It would have been nice if He could have wait and allow us to celebrete Christmas with the little money We have at hand after which come up with his decision. The quantity of Rice available in the country at that period was not enough to feed her citizens. So therefore, there was scarcity of Ri...

Proud and pregnant; 12 year old girl shows off her 14 year old baby daddy

Proud and pregnant; 12 year old girl shows off her 14 year old baby daddy Few days ago, a 12-year-old South African girl made headlines, after she revealed she was pregnant. She shared the photos on social media with the caption ‘pregnant and proud’ here are more photos She has now shared new photos with her baby daddy. The baby daddy of the 12-year-old pregnant South African girl, is reportedly a 14-year-old boy who lives in their neighborhood. UNDILUTED RELELATIONSHIP GIST, INFORMATION AND EDUCATION: Having a good listener can really help. We want to hear what you're going through. Chat with us today when you need. You Don't have to journey alone. Fill in the comment box below and one of our mentors will respond as soon as possible. It's confidential and always free. UNDILUTED RELELATIONSHIP GIST, INFORMATION AND EDUCATION care! UNDILUTED RELATIONSHIP GIST, INFORMATION AND EDUCATION offers all kind of relationship advice, bringing you the very best information a...

Kendall Francois Murdered 8 Women In The 1990s But Never Showed Remorse

Kendall Francois Murdered 8 Women In The 1990s But Never Showed Remorse When police searched the Poughkeepsie, New York home of Kendall Francois in September 1998, they never expected to find a veritable graveyard of sex workers. Stashed in the attic and the basement were the corpses of eight women, some of whom had been strangled to death so violently that their necks had been broken. At the time, Francois was only being charged with the assault of another sex worker in the area, but now authorities had enough evidence to connect him to the unsolved disappearances of each of his victims. Francois was consequently sentenced to life in prison, and shortly afterward it was discovered that he had contracted HIV from one of his victims. ⁠ ⁠ Go inside the macabre true story of the Poughkeepsie Killer Read on ⁠ ⁠In the late 1990s, serial killer Kendall Francois murdered eight female sex workers in and around Poughkeepsie, NY. In 1998, authorities brought Francois in for questioning after he ...

Vwegba Blogging World

Search This Blog

Search on Wikipedia

SO Sad! Transgender Woman Pleads For Life Before Mob Beat Her To Death. click image to read story

Featured Post

10 Reasons Why Men Should Quit Watching Po*n