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 Like 0 Dislike

Follow 0

Other Lessons for You

9 th maths

Trigonometry: First we have to known about the angles which is simply known as all silver tea cups which are the angles of sin cos tan cot sec cosec the angles are 90,180,270,360 brief explanation will be give if u like this.

Viswa Jyothi P.

0 0

Mixed Numbers and Improper Fractions

A mixed number is a combination of a whole number and a fraction. For example, if you have two whole apples and one half apple, you could describe this as 2 + 1/2 apples, or 21/2 apples. Writing...

Amrtha S.

0 0

Easiest way to Find the Remainder on dividing by 7

Split the digits of the number in a group of 3 starting from unit’s place. Add the alternate group and then find their difference. Divide the difference by 7 and get the remainder. Consider the...

Debraj Paul

0 0

Ch 1- Mutliplication short tricks by Ashish Vastri..

1. HOW TO MUTLIPLY 2 digit number by 11? Example 1. 35 * 11 = 385 Step 1. Add both digits of the two digit number. 3+5 = 8. Step 2. Place the result in between both the digits. 3_8_5...

Ashish Vastri

0 0

Difference between atomic number and atomic mass

Atomic mass Atomic number It is the total number of protons and neutrons in an element’s nucleus It is just the number of protons in an elements nucleus. Does not define the type...

Debraj Paul

0 0

Find Class 8 Tuition near you

Online Tuition Class 8

Looking for Class 8 Tuition ?

Learn from Best Tutors on UrbanPro.

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you

Class 8 Tuition Questions

Geeta tosses a coin 4 times. What is the probability of getting atleast as many heads as tails is?

57 Answers

What is the SI unit of weight?

31 Answers

What is the easy way to memorize history?

20 Answers

What is the major occupation of the people of the south African grasslands?

24 Answers

Can fire produced by oil be controlled by water? How?

18 Answers

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

Migrate

Class

Subject

Chapter

Migrate to

Concept Solution

Migration Successful

Take Class 8 Tuition with the Best Tutors

The best Tutors for Class 8 Tuition Classes are on UrbanPro

I am a Student I am a Tutor
Name*	Please enter your full name. Please enter institute name.
Email*	Please enter your email address.
Phone*	Please enter a valid phone number.
Location*	Please enter a pincode or area name.
City*	Please enter city name.
Category*	Please enter category.
Gender*	Male Female Please select your gender.
Email ID/ Mobile No.*	Please enter either mobile no. or email.
Enter Password*	Please enter OTP Please enter Password Sorry, this phone number is not verified, Please login with your email Id.