UrbanPro
true

Take Class 8 Tuition from the Best Tutors

  • Affordable fees
  • 1-1 or Group class
  • Flexible Timings
  • Verified Tutors

Search in

How to solve arithmetic series easily without remembering any formula?

Anand Prakash Yadav
23/05/2017 0 0

1+2+3+4+5+.........100(100 terms)

it can be seen as follows:

1+2+3+4+5+.......+95+96+97+98+99+100

can be rewritten as follows:

(1+100)+(2+99)+(3+98)+(4+97)+(5+96)........so on

every term become 101 this way and the number of such terms will be half as it was before 

so before it was 100 terms, now it is 50 terms.

101+101+101+101+101+.......added 50 times 

which is 101*50=5050

0 Dislike
Follow 0

Please Enter a comment

Submit

Other Lessons for You

Forgetfulness/ Forgetting/ Difficulty in Remembering
In day to day life we come across tons of experiences, every minute something happens, sometimes we feel it, we understand it, we love it, we like it, we don’t like it, we hate it etc. It is highly...
A

Ashoora A.

2 0
0

LIFE PROCESS
Introduction All the plants and animals are alive or living things. The most important criterion to decide whether something is alive or not is the movement. The movements in animals are fast and...

Multiply 789 with 999 in 1 second Best Vedic Math Tricks
You will get the answers in two parts, The left hand side of the answer: subtract 1 from 789, which is 788 The right hand side of the answer subtract 789 from 1000 = 1000-789= 211 Thus, 999 x 789...

Human respiratory system
Respiratory System: Facts, Function and Diseases:- The primary organs of the respiratory system are lungs, which function to take in oxygen and expel carbon dioxide as we breathe. The...

How To Do Unitary Metho Sums?
We know, in unitary method, we first find the value of one quantity from the value of the given quantity. Then we use this value to find the value of the required quantity. While working out the problems...
X

Looking for Class 8 Tuition Classes?

The best tutors for Class 8 Tuition Classes are on UrbanPro

  • Select the best Tutor
  • Book & Attend a Free Demo
  • Pay and start Learning

Take Class 8 Tuition with the Best Tutors

The best Tutors for Class 8 Tuition Classes are on UrbanPro

This website uses cookies

We use cookies to improve user experience. Choose what cookies you allow us to use. You can read more about our Cookie Policy in our Privacy Policy

Accept All
Decline All

UrbanPro.com is India's largest network of most trusted tutors and institutes. Over 55 lakh students rely on UrbanPro.com, to fulfill their learning requirements across 1,000+ categories. Using UrbanPro.com, parents, and students can compare multiple Tutors and Institutes and choose the one that best suits their requirements. More than 7.5 lakh verified Tutors and Institutes are helping millions of students every day and growing their tutoring business on UrbanPro.com. Whether you are looking for a tutor to learn mathematics, a German language trainer to brush up your German language skills or an institute to upgrade your IT skills, we have got the best selection of Tutors and Training Institutes for you. Read more