If sum of first 7 terms of an ap is 49
WebSum of the first 10 terms of the AP = -80 We have Sn = n 2(2a+(n−1)d). ⇒S10 = 10 2(2a+(10−1)d) ⇒−80 =5(2a+9d) ⇒−16 =2a+9d−−−(i) Sum of the next 10 terms of the AP = -280 Sum of the first 20 terms = -80 -280 = -360 i..e, S20 = 20 2(2a+(20−1)d) =−360 ⇒ −360= 10(2a+19d) ⇒ −36= 2a+19d−−−(ii) Subtracting (i) from (ii) , we have 10d =−20 ⇒d … WebIf the sum of first 7 terms of an AP is 49 and that of 17 terms is 289 find the sum of first n terms9. If the sum of first 7 terms of an AP is 49 and that of...
If sum of first 7 terms of an ap is 49
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WebIt is equal to n divided by two times the sum of twice the first term 'a' and the product of 'd' also known as common difference, and (n-1), where n is numbers of terms to be added. … WebIf the sum of 7 terms of an A.P. is 49 and that of 17 terms is 289, find the sum of n terms. If sum of first 6 terms of an AP is 36 and that of the first 16 terms is 256 , find the sum …
Web19 dec. 2024 · Example 5: Find the sum of first 30 terms of an A.P. whose second term is 2 and seventh term is 22. Solution. Let a be the first term and d be the common … Web14 feb. 2024 · If the sum of first 7 terms of an AP is 49 and that of 17 term is 289 find the sum of first n term Get the answers you need, now!
WebIf the sum of first 7 terms of an AP is 49 and that of 17 terms is 289, find the sum of first n terms. Solution Step 1: Find the equation for first 7 term Given that, sum of the first 7 … WebAn arithmetic progression (AP) is a sequence where the two consecutive terms have the same common difference. It is obtained by adding the same fixed number to its previous term. From the question: a = -5 d = 2. The formula to find the sum is Sn = n/2 [2a + (n - 1)d]. Substituting the values, we get, S₆ = 6/2 [2a + (6 - 1)d] S₆ = 3 [2 (-5) + 5 (2)]
Web16 okt. 2024 · If the sum of n terms of an A.P. is 2n^2 + 5n , then its nth term is A. 4n − 3 B. 3n − 4 C. 4n + 3 D. 3n + 4 asked Jul 16, 2024 in Arithmetic Progression by Maanas ( 26.0k points) arithmetic progression
Web6 aug. 2024 · Find the first three terms of the AP. asked Dec 22, 2024 in Arithmetic Progression by Bhairav (71.6k points) class-10; ... 0 votes. 1 answer. If the sum of first 7 terms of an AP is 49 and that of 17 terms is 289, find the sum of first n terms. asked Jul 10, 2024 in Arithmetic Progression by Bhairav (71.6k points) class-10 ... hawkins family cemeteryWebIf the sum of first 7 term of an ap is 49 and that of 17 terms is 289 find the sum of first n terms Report ; Posted by Jayesh Baheti 2 years, 10 months ago. CBSE > Class 10 > … boston koreatownWeb18 mrt. 2024 · If the sum of first 7 terms of an AP is 49 and that of 17 terms is 289, find the sum of first ‘n terms. asked Mar 19, 2024 in Arithmetic Progression by Mohini01 (67.9k … hawkins falls tv showWebIf the sum of first 7 terms of an AP is 49 and that of 17 terms is 289, find the sum of first n terms. Solution: Sum of the first n terms of an AP is given by Sₙ = n/2 [2a + (n - 1) d] or … boston known for what foodWebUh these some of first, in terms of the given sequence uh they're sequences ap and it is given that some of first seven terms is 49 and 17 term is 289. So we know the … boston known forWebThe sum of n terms of an AP can be easily found out using a simple formula which says that, if we have an AP whose first term is a and the common difference is d, then the formula of the sum of n terms of the … boston korean churchWeb10 okt. 2024 · The sum of the first five terms of an AP and the sum of the first seven terms of the same AP is 167. If the sum of the first ten terms of this AP is 235 , find the … boston korean newspaper