Web20 nov. 2013 · CBSE Most Important Questions for Class 11 commerce; CBSE Most Important Questions for Class 12 science; CBSE Most Important Questions for Class 12 commerce; ... how many terms of an AP 1,4,7...must be taken to give a sum of 51? Asked by jaiprakashprasadr 17 Jul, 2024, 11:03: PM. ANSWERED BY EXPERT. WebS36 = 36 2[2×20+(36−1) −2 3] = 18[40−35× 2 3] = 18[40− 70 3] = 18×( 120−70 3) = 6×50 = 300. it satisfies for n = 36. So let's find the sum of terms from 26th to 36th term (the 11 …
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WebHow many terms of the A.P -6, -11/2, -5, -9/2........are needed to give their sum zero. arithmetic progression cbse class-10 1 Answer +2 votes answered Sep 29, 2024 by … WebThe AP is -6, -11/2, -5, … It is an AP with the first term as -6 and the common ratio is 1/2. Sn = -25 = (n/2) [2a + (n-1)d] = (n/2) [-12 + (n-1)* (1/2)] = (n/2) [-12–1/2 + (n/2)] = (n/2) [-25/2 + (n/2)] -25*4 = n [-25+n] n^2–25n+100 = 0 (n-20) (n-5) = 0 n = 20 or 5. So either 5 terms or 20 terms of the AP will add up to -25. Answer. 2.1K views
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WebAP = 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 Given, a = 1, d = 2-1 = 1 and a n = 15 Now, by the formula we know; S n = n/2 [2a + (n − 1) × d] S 15 = 15/2 [2.1+ (15-1).1] = 15/2 [2+14] = 15/2 [16] = 15 x 8 = 120 Hence, … WebHow many terms of the AP 27, 24, 21, … should be taken so that their sum is 0 Q. How many terms of the AP 9, 17, 25, ... must be taken so that their sum is 636?
WebWhere a is first term of AP and d is difference between two consecutive terms of AP. Calculation: Given series is 2, 4, 6, 8, 10,..... a = 2 and d = 2. Let sum of n terms of AP is …
Web28 mrt. 2024 · Class 11 Class 11 Maths; Class 11 Computer Science (Python) ... Chapter 5 Class 10 Arithmetic Progressions (Term 2) Last updated at March 28, 2024 by Teachoo. This video is only ... Get live Maths 1-on-1 Classs - Class 6 to 12. Book 30 minute class for ₹ 499 ₹ 299. Transcript. Show More. Next: Ex 5.3, 5 → Ask a doubt . Chapter ... great lakes legacy actWebSum of n AP terms = S n = n 2 [ 2 a + ( n − 1) d] Where a is first term of AP and d is difference between two consecutive terms of AP. Calculation: Given series is 2, 4, 6, 8, 10,....... a = 2 and d = 2 Let sum of n terms of AP is 210. Therefore, 210 = n 2 [ 2 × 2 + ( n − 1) 2] ⇒ n 2 + n - 210 = 0 ⇒ n 2 + 15n - 14n - 210 = 0 float therapy colorado springsWeb29 mrt. 2024 · Ex 5.2, 2 (ii) Choose the correct choice in the following and justify 11th term of the A.P. – 3, – 1/2, 2….. is A. 28 B. 22 C. − 38 D. –48 1/2 Given AP –3, (−1)/2 , 2, …. … float therapy denverWebAn AP consists of 50 terms of which 3 rd term is 12 and the last term is 106. Find the 29 th term. Medium View solution > View more More From Chapter Arithmetic Progressions … great lakes learning academy to watchWeb19 mrt. 2024 · Find an answer to your question how many terms of the A.P -6,-11/2,-5 _____ are needed to give the sum - 25? Explain the double answer chandnidewangan787 chandnidewangan787 float therapy frederictonWebAnswer (1 of 3): First term a =-6 Commondifference d =0.5 Number of terms =n Sum =n/2 (2a +(n-1)d) = -25 n/2(-12+(n-1)0.5) = -25 n/2(-12 +0.5n -0.5) = -25 n/2(-12.5 ... float therapy frederick mdWeb9 dec. 2024 · Answer: No of terms = 5 ,20 Step-by-step explanation: Given : AP : -6, -11/2 , -5 To find: No of terms to give sum = -25 Steps: Firstly e calculate the common … great lakes league soccer