In an a.p if s10 35 and s9 28 find a10
Web4.In an A.P if S10 = 35 and S9 = 28 find a10. Ans:- a10=Sn-Sn-1=S10-S10-1=S10-S9=35-28=7 5. Find the sum of first 25 odd natural numbers. 𝑛 Ans:- Sn = (a + an) ,The first term a = 1,The common difference d = 2 2 1250 n = 25 = = 625 2 6.Which term of the A.P 3,8,13,18,…….. is 78 . Ans:- a = 3, d = 8 – 3 = 5, an = 78, n =? 80 WebFeb 7, 2024 · Step-by-step explanation: For an A.P. a = 6, d = 3. Sn = n/2 [2a + (n – 1) d] ∴ S10 = 10/2 [2a + (10 – 1) 1] ∴ S10 = 5 [2 (6) + 9 (3)] ∴ S10 = 5 (12 + 27) ∴ S10 = 5 (39) ∴ S10 = …
In an a.p if s10 35 and s9 28 find a10
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WebMar 22, 2024 · Given a = 8, an = 62, Sn = 210, Since there are n terms, 𝑙 = an = 62 We use the formula Sn = 𝒏/𝟐 (𝒂+𝒍) Putting a = 8, Sn = 210, 𝑙 = an = 62 210 = 𝑛/2 (8+62) 210 × 2=𝑛 × (70) 420 = n × 70 420/70=𝑛 6 = n n = 6 Now we need to find d We can use formula an = a + (n – 1) d Putting an = 62, a = 8, n = 6 62 = 8 + (6 – 1) × 𝑑 62 = 8 + 5d 62 – 8 = 5d 54 = … WebHow to delete apps on a Samsung Galaxy 1. Start the Settings app and tap "Apps." 2. In the list of apps, find the app you want to delete. You can find a complete list of all apps installed on...
WebTo find the sum of the first n terms of an arithmetic series use the formula, n terms of an arithmetic sequence use the formula, S n = n ( a 1 + a n ) 2 , where n is the number of terms, a 1 is the first term and a n is the last term. The series 3 + 6 + 9 + 12 + ⋯ + 30 can be expressed as sigma notation ∑ n = 1 10 3 n . WebFind the right Morgan Stanley advisor for your wealth management. Morgan Stanley has dedicated advisors in Massachusetts who are ready to help you meet your wealth …
WebFind a. Hard Solution Verified by Toppr We know that in an AP If first term is a 1=a, common difference is d then the n th term is a n=a+(n−1)d Sum of first n terms of this AP is S n=2n(a 1+a n)=2n(2a+(n−1)d) Now, (i) a 1=a=5 d=3 a n=50=a+(n−1)d ⇒50=5+(n−1)3 ⇒n=16 S n=2n(a 1+a n) ⇒S n= 216(5+50) ⇒S n=8×55=440 (ii) a 1=7 a 13=35 ⇒n=13
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