In an ap the sum of first n terms is 5n 2/2

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WebAug 28, 2024 · In an AP the sum of first n terms is 3n^2/2 + 5n/2 find the 25th term. Advertisement Expert-Verified Answer 1282 people found it helpful Brainly User Let the … WebThe sum of the first n terms of an AP is (5n 2 /2 +3n/2). Find its nth term and the 20th term of this AP. arithmetic progression class-10 1 Answer +2 votes answered Sep 14, 2024 by …

Nth term of an AP(Arithmetic Progression): Formula and Sum of n …

Webin an AP the sum of first n terms is 3n2/2 + 13n/2 Solution Verified by Toppr Was this answer helpful? 0 0 Similar questions The first term of two APs are equal and the ratios of … WebAnswer (1 of 3): Sum of the first n terms, Sₙ= 5n²-2n Let S₄₉ and S₅₀ be the sum of first 49 terms and first 50 terms respectively. Let t₅₀ be the 50 th term. S₅₀= S₄₉+t₅₀ t₅₀= S₅₀-S₄₉ S₄₉ = … greenstar heating and air

in an AP the sum of first n terms is 3n2/2 + 13n/2 - Toppr

WebApr 20, 2024 · The sum of the first n term of an AP,denoted by S_n is given by S_n=n^2+8n So n th term of the series will be t_n=S_n-S_(n-1)=n^2+8n-((n-1)^2+8(n-1)) =>t_n=2n-1+8=2n+7 Inserting n=1,2,3.... we get "For "n=1tot_1=2*1+7=9 "For "n=2tot_2=2*2+7=11 "For "n=3tot_3=2*3+7=13 Hence first term t_1=9 and common difference d=t_2-t_1=11-9=2 … WebApr 20, 2024 · The sum of the first n term of an AP,denoted by Sn is given by. Sn = n2 +8n. So. n th term of the series will be. tn = Sn −Sn−1 = n2 + 8n − ((n −1)2 +8(n − 1)) ⇒ tn = 2n … WebGiven ratio of sum of n terms of two AP’s = (7n+1):(4n+27) Let’s consider the ratio these two AP’s mth terms as am : a’m →(2) Recall the nth term of AP formula, an = a + (n – 1)d Hence equation (2) becomes, am : a’m = a + (m – 1)d : a’ + (m – 1)d’ On multiplying by 2, we get am : a’m = [2a + 2(m – 1)d] : [2a’ + 2(m ... green star grocery ithaca ny

The sum of first n terms fo an AP is 5n n2 the nth term of the AP is …

If the ratio of the sum of first

WebThe sum of n terms of AP is the sum (addition) of first n terms of the arithmetic sequence. It is equal to n divided by 2 times the sum of twice the first term – ‘a’ and the product of the … fnaf fangame open source download redditWebSo, the sum of the first n terms of an AP is given by. S = n/2[2a + (n 1) d] We can also write as. S = n/2[a + a + (n 1) d] S = n/2[a + an] (iii) If there are only n terms in an AP, then a n = l, … greenstar group wa pty ltd

"WebOct 16, 2024 · The sum of the first n terms of an A.P. is given by Sn = 2n2 + 5n , find the nth term of the A.P. arithmetic progression class-10 1 Answer +1 vote answered Oct 16, 2024 by Ishti (46.5k points) selected Oct 31, 2024 by Anika01 Best answer Sn =2n2 + 5n Taking n = 1, we get S1 = 2 (1)2 + 5 (1) ⇒ S1 = 2 + 5 ⇒ S1 = 7 ⇒ a1 = 7 Taking n = 2, we get " - In an ap the sum of first n terms is 5n 2/2

In an ap the sum of first n terms is 5n 2/2

In an AP the sum of first n terms is 3n2/2 + 5n/2 find the 25th term …

WebMar 23, 2024 · The sum of the third and the seventh terms of an AP is 6 and their product is 8. Find the sum of first sixteen terms of the AP. 3. A ladder has rungs 25 cm apart. (see Fig. 5.7). The rungs decrease uniformly in length from 45 cm at the bottom to 25 cm at the top. WebJul 25, 2024 · Mohammed Owais. 2 years ago. Its bcoz, (Ref=n/2) the sum of any 2 terms of an AP is divided by 2 gets it middle number. example, 3+6/2 is 4.5 which is the middle of these terms and if you …

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WebWe know that in an AP sum of the first n terms Sn = (n/2) {2a+ (n-1)d} and the nth term=a+ (n-1)d So (3n/2) {2a+ (3n-1)d} = (n/2) [2 {a+ (3n+1–1)d}+ (n-1)d] =>6a+9nd-3d = 2a+6nd+nd-d.. (This is after cancelling n/2 both sides =>4a+2nd-2d = 0 => 2a+nd-d = 0…. (1) The ratio of the first 2n termsis equal to the sum of the next 2n terms => WebApr 10, 2024 · Sum of first n terms of an AP S n = n 2 [ 2 a + ( n − 1) d] Where a =1st term & d =common difference Or, S n = n 2 [ a + a n] If there are only n terms in an AP, then a n =l, l=last term We will put n=1, 2 in the sum formula and evaluate the first and second term of the A.P. Then we can easily derive the common difference. By putting all these in

WebJul 12, 2024 · Best answer Let Sn denotes the sum of first n terms of the AP. ∴ Sn = 5n - n2 ⇒ ⇒ Sn-1 = 5 (n - 1) - (n - 1)2 = 5n - 5 - n2 + 2n - 1 = 7n - n2 - 6 ∴ nth term of the AP, an = Sn … WebDec 19, 2024 · at n = 1, S 1 = 2 + 3 = 5 = first term at n = 2, S 2 = 2 (2) 2 + 3 (2) = 8 + 6 = 14 ≠ second term = sum of first two terms. ∴ second term = S 2 – S 1 = 14 – 5 = 9 ∴ d = a 2 – …

WebJan 15, 2024 · If the sum of the first n terms of a series is 5n2 + 2n, then its second term is (A) 7 (B) 17 (C) 24 (D) 42 ... If the sum of the first n terms of a series is 5n 2 + 2n, then its second term is (A) 7 (B) 17 (C) 24 ... terms are in AP whose common difference is 2 and the last (2n + 1) asked Jan 18, 2024 in Binomial theorem by Ritik01 (48.4k ... WebThe sum of first n terms of an AP is (5n − n2). The nth term of the AP is (a) (5 − 2n) (b) (6 − 2n ... The sum of first n terms of an AP is (4 n 2 + 2 n) The nth term of this AP is (a) (6n-2) …

WebJan 8, 2024 · In an AP the sum of first n terms is 3n^2/2 + 5n/2 find the 25th term.In an AP the sum of first n terms is (3n^2+ 5n)/2 find the 25th term.In an AP the sum o...

WebSolution Given that sum of the first n terms of an AP is 5n - n 2 Sn = 5n − n 2 First term, a 1 = S 1 = 5 (1) − (1) 2 = 5 − 1 = 4 Sum of first two terms = S 2 = 5 (2) − (2) 2 = 10 − 4 = 6. … greenstar health careWebThe sum of first n terms of an A.P is 5n−n 2. Find the n th term of this A.P A 6−5n B 6−2n C 5−2n D None of these Easy Solution Verified by Toppr Correct option is B) Given, S … greenstar health care leedsWebThe sum of the first n term sofa an AP is ( 3 n 2 2 + 5 n 2). Find its nth term and the 25th term Advertisement Remove all ads Solution Let S denotes the sum of first n terms of the AP. ∴ s n = ( 3 n 2 2 + 5 n 2) ⇒ s n - 1 = 3 ( n - 1) 2 2 + 5 ( n - 1) 2 = 3 ( n 2 - 2 n + 1) 2 + 5 ( n - 1) 2 = 3 n 2 - n - 2 2 ∴ n th term pf the AP , a n fnaf fangame onlineWebJun 28, 2024 · nth term =10n+3 Step-by-step explanation: sn=d/2 n^2+ (a-d)n 5n^2+3n=d/2n^2+ (a-d)n from the equation d/2=5 d=10 (a-d)=3 a-10=3 a=13 first term =13 sum of first two term 2nd term =a+d =13+10 =23 sum of first two term =13+23 =36 third term =a+2d = 13+ (2×10) =13+20 =33 10th term=a+9d =13+ (9×10) =13+90 =103 nth … fnaf fangames archiveWebMar 27, 2024 · Solution For 10] Find the sum of first ' n ' terms of an AP 2 ,8 ,18 ,32 , 11] If α,β and γ are the zeroes of the polynomial P(x)=x3−6x2−x+30 then fin. The world’s only live instant tutoring platform. Become a tutor About us Student login Tutor login. Login. Student Tutor. Filo instant Ask button for chrome browser. ... fnaf fangame officeWebMar 22, 2024 · Transcript. Ex 9.2,13 If the sum of n terms of an A.P. is 3n2 + 5n and its mth term is 164, find the value of m. Let a1, a2, … an be the given A.P Given, Sum of n terms = 3n2 + 5n Sn = 3n2 + 5n Putting n = 1 in (1) S1 = 3 × 12 + 5 × 1 = 3 × 1 + 5 × 1 = 3 + 5 = 8 Sum of first 1 terms = First term ∴ First term = a1 = S1 = 8 Sn = 3n2 + 5n …(1) Putting n = 2 in … green star grocery ithacaWebThe Sum of the First N Terms of an Ap in `((5n^2)/2 + (3n)/2)`.Find Its Nth Term and the 20th Term Of This Ap. CBSE English Medium Class 10 ... Important Solutions 4010. Question Bank Solutions 26519. Concept Notes & Videos 213. Time Tables 14. Syllabus. The Sum of the First N Terms of an Ap in `((5n^2)/2 + (3n)/2)`.Find Its Nth Term and the ... fnaf fangames.com