0 Deepak Bora Asked: September 24, 20202020-09-24T13:59:12+05:30 2020-09-24T13:59:12+05:30In: CBSE Find the sums of 34 + 32 + 30 + ……….. + 10. 0 The question is given from ncert Book of class 10th Chapter no. 5 Ex. 5.3 Q. 2 (ii). In the following question you have to find teh sum of the given A.P. Also answer the question briefly. arthmetic progressionclass 10thexcersice no. 5.3ncert Share Facebook Related Questions Using the given information, find the value of x in each of the following figures : If x = h + a cos θ and y = k + a sin θ, prove that ... Find the sum of − 5 + (− 8) + (− 11) + ………… + (− 230). Find the sum of the A.P. 1/15, 1/12, 1/10, …… , to 11 terms. Find the sum of the following AP. 0.6, 1.7, 2.8 ,…….., to 100 terms. 1 Answer Voted Oldest Recent Deepak Bora 2020-09-27T17:52:11+05:30Added an answer on September 27, 2020 at 5:52 pm Given:- a = 34 , d = – 2 , l = 10 We know that, Sn = n/2 ( a + l) We have to find out n =?.. An = a + ( n – 1) d 10 = 34 + ( n- 1) (- 2) 10 = 34 – 2n + 2 10 = 36 – 2n – 26 = – 2n n = 13. S13 = 13/2 ( 34 + 10) S13 = 13/2 x 44 S13 = 13 x 22 S13 = 286. 0 Reply Share Share Share on Facebook Share on Twitter Share on LinkedIn Share on WhatsApp Leave an answerLeave an answerCancel reply Featured image Select file Browse Add a Video to describe the problem better. Video type Youtube Vimeo Dailymotion Facebook Choose from here the video type. Video ID Put Video ID here: https://www.youtube.com/watch?v=sdUUx5FdySs Ex: "sdUUx5FdySs". Click on image to update the captcha. Save my name, email, and website in this browser for the next time I comment.

Given:-

a = 34 , d = – 2 , l = 10

We know that,

Sn = n/2 ( a + l)

We have to find out n =?..

An = a + ( n – 1) d

10 = 34 + ( n- 1) (- 2)

10 = 34 – 2n + 2

10 = 36 – 2n

– 26 = – 2n

n = 13.

S13 = 13/2 ( 34 + 10)

S13 = 13/2 x 44

S13 = 13 x 22

S13 = 286.