In an ap the sum of first n terms is 5n 2/2
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 … 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
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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 … WebAn arithmetic progression or arithmetic sequence (AP) is a sequence of numbers such that the difference from any succeeding term to its preceding term remains constant throughout the sequence. The constant difference is called common difference of that arithmetic progression. For instance, the sequence 5, 7, 9, 11, 13, 15, . . . is an arithmetic progression …
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 ... 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 = …
WebThe 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 ... 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.
WebMar 30, 2024 · Given Sn = 2n2 + 3n Taking n = 1 S1 = 2 12 + 3 1 = 2 + 3 = 5 So, Sum of first term of AP is 5 But sum of first term will be the first term So, First term = a = 5 Taking n = 2 in Sn S1 = 2 22 + 3 2 S2 = 2 4 + 6 S2 = 8 + 6 S2 = 14 Sum of first 2 terms is 14 Finding 2nd term Sum of first 2 terms is 14 First term + Second term = 14 5 + a2 = 14 a2 = …
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. … fitness park longchampsWebin 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 … can i buy havana club rum in usaWebGiven 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 ... can i buy hbo without cableWebApr 1, 2024 · It is given that; the sum of first \[n\] terms of a series be \[5{n^2} + 2n\]. We have to find the second term. To solve the sum, we have to find the first term and the sum of the first two numbers. By substituting n by 1 and 2 we will get the first number of the series and the sum of the first two numbers of the series. Now, substituting \[n ... fitness park guadeloupe inscriptionWebApr 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 … fitness park le raincyWebThe 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 fitness park marly 57WebJun 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 … can i buy health insurance privately