WebAnswer (1 of 5): In the above AP series it is given that Sn = 513 a = 54 d = (-3) n = ? We know Sn = n/2(2a+(n-1) d) Therefore 513 =n/2(2×54) +(n-1) (-3) 1026 = n(108-3n+3) =108n-3n^2+3n 3n^2-108n-3n+1026 = 0 Dividing above equation by 3 n^2-36n-n+342 = 0 n^2-37n+342 = 0 n^2–18n-19n... WebHow many terms of the series 54, 51, 48, …. be taken so that their sum is 513 ? Explain the double answer Advertisement Remove all ads Solution ∵ a = 54, d = – 3 and S_n = 513 …
How many terms of the series 54, 51, 48 be taken so that their
Web5 jan. 2024 · Math Secondary School answered Find the number of terms of AP 54, 51, 48 so that the sum is 513 Advertisement Loved by our community 30 people found it helpful Frozeblood745 Answer: Step-by-step explanation: Given : a= 54 d = 51-54= -3 Sn =513 To find : n= ? Solution: Sn=n/2 [2a+ (n-1)d] 513= n/2 [2×54+ (n-1) -3] 513×2= n [108-3n+3] Web28 mrt. 2024 · Ex 5.3, 4 - Chapter 5 Class 10 Arithmetic Progressions (Term 2) Last updated at March 28, 2024 by Teachoo. This video is only available for Teachoo black … oo-kinza fish house
57, 54, 51, 48, .........are in Arithmetic Progression. The value of ...
Web31 mrt. 2024 · nth term of AP = 0 The given AP = 54, 51, 48 … Formula: T n = a + (n – 1)d Where, a = first term and d = common difference Calculation: Here, a = 54 d = 51 – 54 = … WebHow many terms of the series 54,51,48,...... be taken so that their sum is 513? A 18 B 19 C 20 D A and B Medium Solution Verified by Toppr Correct option is D) Given series is 54,51,48,.... Sum of n terms of an A.P. is given by: S n= 2n[2a+(n−1)d] 513= 2n[2×54+(n−1)3] 1026=n[108−3n+3] 1026=111n−3n 2 3n 2−111n+1026=0 n … Web1 feb. 2024 · How many terms of the series 54, 51,48 ....... be taken so that, their sum is 513 ? Explain the double answer. arithmetic progression class-10 1 Answer +2 votes … ookla chile