## Bharat Gupta is teaching live on Unacademy Plus

SEQUENCE AND SERIES Class -14 (Miscellaneous Proqression)

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

Find the sum of the series 112 122132 142 ..+252 a. 5525 b. 5140 c. 5040 d. 4960

Find the sum of the series 112 122132 142 ..+252 a. 5525 b. 5140 c. 5040 d. 4960

To find the sum of n terms of a given series of natural numbers, we may follow the following algorithm: 1. Write the nth term of the series. 2. Simplify the nth term and express it as polynomial in n i.e. T 3. Take the summation from 1 to n i.e. an+ bn2+ cn+ d Some examples will illustrate the algorithm.

Find the sum of the n term of the series whose nth term 2n2 - 3n 5 a. (4n2-3n+ 20) b (4n2-3n +23) (3n2-3n20) d.4 (3n2-3n + 23) 6

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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

Find the sum of the n term of the series whose nth term 2n2 - 3n 5 a. (4n2-3n+ 20) b (4n2-3n +23) (3n2-3n20) d.4 (3n2-3n + 23) 3

Find the sum of the n term of the series 12 32 5272.. b. (4n-1) c. (r12-1) d. (n21) 4

1x22+2x32+3x42+...+-nx(n+1)2 3n+5 3n+1 3n-5 2n+3 2n+5 al-3 d' a. b. 3n-1

Find the value of 12x2+21x3+3x4 +n2x (n+1) 3n+5 3n+1 3n-5 2n+3 2n+5 d.zn-3 2n-5 a. 3n-1 12. -n (n 12 1 2n-el

< 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