## Bharat Gupta is teaching live on Unacademy Plus

SEQUENCE AND SERIES Class -16 (Miscellaneous Progression - 3)

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 1.n2. (n 1) +3.(n - 2) +...+ (n-1). 2+ n.1 n(n+2) (2n+1) a. h n(n+2)(n+-2) b. n(n+2) (2n+1) C. d n(n+2) (n+2) 6 3 Find the sum of 20 terms of the series 1.2.5+2.3.6+3.4.7 + a. 60240 b. 58280 c. 62370 d. 59290 Find the sum of 12 terms of the series, whose nth term is n3-3 a.-797160 b. -791076 c.-683760 d.-683060

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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 series 1.n2. (n 1)3.(n 2) +.......+ (n 1). 2+n.1 n(n+2)(2n+1) 6 n(n+2)(n+2) 6 n(n+2) (2n+1) 3 n(n+2) (n+2) 3 a. b. C. d.

Find the sum of the series 1.n2. (n 1)3.(n 2) +.......+ (n 1). 2+n.1 n(n+2)(2n+1) 6 n(n+2)(n+2) 6 n(n+2) (2n+1) 3 d. +2)0+2) a. b. C. 3

Find the sum of the series 1.n2. (n 1)3.(n 2) +.......+ (n 1). 2+n.1 n(n+2)(2n+1) 6 n(n+2)(n+2) 6 n(n+2) (2n+1) 3 d. +2)0+2) a. b. C. 3

Find the sum of 20 terms of the series 1.2.52. 3. 63.4.7. a. 60240 b. 58280 c. 62370 d. 59290

Find the sum of 20 terms of the series 1.2.52. 3. 63.4.7. a. 60240 b. 58280 c. 62370 d. 59290 Sens-I Sen 3 2

Find the sum of 12 terms of the series, whose nth term is n3 3n a.-797160 b. -791076 c.-683760 d. -683060

< Back to Plus Revision Course on Quantitative Aptitude for CAT 2018 Bharat Gupta 9k followers I001 70academy YouTube 1st october to 6th November 2018 In this course, Bharat Sir, (20 years teaching experience) will conduct a Revision course covering the most important topics of Quants for CAT 2018 and explain topics with his unique shortcut trick and option elimination approach. Target audience comprises of primarily CAT 2018 and other MBA Exams aspirants. The course will be conducted in English and the notes and practice sheet will also be provided in English 24 hours of live classes Private Discussion Forum Doubt clearing sessions and Live quizzes 5,400 Includes 18% GST Apply for this Plus Course O Last date to apply is 30th Sept