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Special series - 2

## Bharat Gupta is teaching live on Unacademy Plus

Bharat Gupta
Engineer by degree Mathematician by Heart. Having 22 years of teaching experience. Visit my youtube channel BHARAT GUPTA-RADIX .

U
sir slide agar hindi mai ho to jyada better hai kyoki ab dono language show nahi hoti . explanation is very perfect. thanks sir
Br
sir could not undrstand the last question...if we take a ap of -3,-7,-11 and then find the sum of n terms...
Sir, any short cut trick for question 1 ?
Pankaj
9 days ago
bhai yeh formula hi revise kr lo
1. SEQUENCE AND SERIES Class -15 (Miscellaneous Progression - 2)

2. SOME SPECIAL SEQUENCES 1. The sum of first n natural numbers 2. The sum of square of first n natural numbers I 2 6 3. The sum of cube of first n natural numbers 2

3. Find the sum of 10 term of the series 12 (12 22) (1222 32) a. 1440 b. 1210 C. 1300 d. 1458 The sum of N natural numbers is divided into classes as follows 2 3 4 6 10 12 Find the sum of the number in nth row. a.n(n? + 2) b. n(2n2 + 1) . 3n(n? + 1) d.n(3n2 + 1) Find the sum of n terms of the series 12-22+ 32 42+52-62........ n(n-1 2 n(n-1 e. a or c 2 2

4. Increase your percentile, push some more. Join the genus of 100%ile CAT PLUS COURSE Bharat Gupta Produces several 100%ilers in past years

5. Live classes Recorded Classes Discussion Forum CAT PLUS COURSE Batch-1 Revision Course on Quantitative Aptitude for CAT 2018 Batch 2 : Master Mensuration and Geometry for CAT 2018 V Facebook Group unacademy Practice Sheets Registration open till 30th Sep 18 Bharat Gupta Doubt clearing Visit: https://unacademy.com/plus

6. Find the sum of 10 term of the series 12(1222)(122232. . a. 1440 b. 1210 C. 1300 d. 1458

7. Find the sum of 10 term of the series 12(12 +22)(12 2232 a. 1440 b. 1210 C. 1300 d. 1458 Sum a n 6 6 2.

8. Find the sum of 10 term of the series 12(12 +22)(12 2232 a. 1440 b. 1210 C. 1300 d. 1458 Sumol n C2 n Chr 2. 12

9. Find the sum of 10 term of the series 12(12 +22)(12 2232 a. 1440 b. 1210 C. 1300 d. 1458 12 = 1 2

10. The sum of N natural numbers is divided into classes as follows 2 3 4 5 7 10 11 12 Find the sum of the number in nth row. a. n(n2 2) b.n(2n2 + 1) .3m(n2 + 1) d.n(3m2 + 1)

11. The sum of N natural numbers is divided into classes as follows 2 4 9 6 11 8 10 12 Find the sum of the number in nth row. a. n(n+2) b. n(2n21 c. 3n(n2+1) d. n(3n2 + 1) Sum a n in no - Sa OL 2. 2 2.

12. Find the sum of n terms of the series 12- 22+32 4252-62.......... a. ah 1 b, m-1) n(n-1 2 C. d. 2 e. a or c n'hA- the seu ahve o. knihe ao n o odd@t even 2.

13. < Back to Plus Master Mensuration and Geometry for CAT Bharat Gupta gk followers 7 unacademy 30th September to 16th October 2018 12 hours of live classes In this course, Bharat Gupta (20 years teaching experience for CAT, GMAT, GRE SSC, BANK etc) will help learners to master Mensuration and Geometry and explain topics with the tricks and option elimination approach, which will be helpful for aspirants to crack CAT 2018 and other MBA Entrance Examinations. The course will be conducted in English and the notes will also be provided in English. Private Discussion Forum Doubt clearing sessions and Live quizzes E2,700 includes 18% GST Apply for this Plus Course O Last date to apply is 30th Sept LIMITED SEATS. Cost increases on 27th Sept. About this course