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

verb formations
लट् लकार (वर्तमान काल, Present Tense) पुरुष एकवचन द्विवचन वहुवचन प्रथम पुरुष ति तस् (तः) अन्ति मध्यम...

Adverbs
Definition : An Adverb is a word which modifies the meaning of a verb. Types of Adverbs There are following 7 types of adverbs : 1) Adverbs of Time Example - I have heard this before. before is...
C

To Find the Cube of any 2 digit number, we have to take the following steps.
First Step: The first thing we have to do is to put down the cube of the tens-digit in a row of 4 figures. The other three numbers in the row of answer should be written in a geometrical ratio in the exact...

Difference between Vitamin B and Vitamin C
1. Vitamin B is found in 8 different forms. However, vitamin C is found only in a single form, ascorbic acid.2. Sources of vitamin B include meat, egg yolk, yeast etc. Vitamin C is obtained from fruits...

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