Autoplay Next video from Max length
A person writes a letter to four of his friends. He asks each one of them to copy the letter and...

238 views · Published 20 July 2018 · 3:04 · Indexed 22 September 2026
Channel: Doubtnut · 2018 · Education
Question From - NCERT Maths Class 11 Chapter 9 MISCELLANEOUS EXERCISE Question – 29 SEQUENCES AND SERIES CBSE, RBSE, UP, MP, BIHAR BOARD

QUESTION TEXT:-
A person writes a letter to four of his friends. He asks each one of them to copy the letter and mail to four different persons with instruction that they move the chain similarly. Assuming that the chain is not broken and that it costs 50 paise to mail one letter. Find the amount spent on postage when 8th set of letter is mailed.

Doubtnut  के साथ १००%  मार्क्स पायें, आज ही डाउनलोड करें :-
https://doubtnut.app.link/91GzfmKxjP

Related Questions & Solutions:

1. Show that the sum of `(m+n)^(t h)` and `(m-n)^(t h)` terms of an A.P. is equal to twice the `m^(t h)` term....
https://youtu.be/WxvXoPTOdc0

2. If the sum of three numbers in A.P., is 24 and their product is 440, find the numbers....
https://youtu.be/4CMdQ6TlbYA

3. Let the sum of n, 2n, 3n terms of an A.P. be `S_1,S_2` and `S_3` , respectively, show that `S_3=3(S_2-S_1)` ....
https://youtu.be/rA_xEWiN268

4. Find the sum of all numbers between 200 and 400 which are divisible by 7....
https://youtu.be/DHrr3xfk7HA

5. Find the sum of integers from 1 to 100 that are divisible by 2 or 5....
https://youtu.be/hBLBrDlbbZc

Get Classwise & Chapterwise Definitions & Solutions from NCERT Book:

• NCERT Solutions for class 6th to class 12th Maths -  https://doubtnut.com/ncert-solutions
• NCERT Solutions for Class 11 - https://doubtnut.com/ncert-solutions/class-11-maths-1
• NCERT Solutions for Class 11, Chapter 9 - https://doubtnut.com/ncert-solutions/class-11-maths-chapter-9-sequences-and-series-1


Score 100% With Doubtnut

Prepare your class 11 subjects with our intuitive video solutions and score well in your final academic exam 2019-20. Students can click the doubt question from their text book of class 11 maths, physics, chemistry, biology, and find instant video solutions on our renowned doubt solving app or even on our website.

The video tutorials are helpful in preparation for the entrance exams like IIT JEE Main and Advanced, and NEET exam. Students can resolve their doubts with self-explanatory video solutions of questions from popular books of Math, Physics, Chemistry, Biology are solved for easy and swift learning.

Student can prepare for IIT JEE at https://doubtnut.com/iit-solutions.

Student can prepare for NEET at https://doubtnut.com/exams/neet

Subscribe our channel for latest and trending videos on various topics from subjects like – Maths, Physics, Chemistry, Biology etc for Board & higher studies.

Doubtnut  ऍप पर आप कक्षा ६ से १२  (IIT JEE  तक)  के  NCERT के गणित/

भौतिक विज्ञान/रसायन विज्ञान/जीव विज्ञान/ के सभी सवालों के वीडियो देखिये और मुफ्त में खोजिये किसी
भी गणित सवाल का जवाब  - 5 लाख  से भी ज़्यादा सवालों के जवाब हैं Doubtnut ऍप पर

Doubtnut App and website has video solutions of ALL the NCERT questions from Class 6 to 12. You can download the NCERT solutions in pdf format too.

Doubtnut app provides free online video solutions that help students to better understand each topic and retain what they have learnt for a longer duration. It further helps in creating a stronger foundation for future classes.

You can also ask any question related to Math, Physics, Chemistry, Biology and get a video solution for FREE from a library of more than 5 Lakhs Videos

Follow Us On Facebook
https://www.facebook.com/doubtnut
A person writes a letter to four of his friends. He asks each one of them to copy the letter and...

More from this channel
