WebJul 11, 2024 · In an ap if 12th term is -13 and the sum of its first four terms is 24 , find the sum of its first ten terms. ← Prev Question Next Question →. 0 votes. 328 views. asked … WebMar 18, 2024 · If 12 th term of an A.P. is -13 and the sum of the first four terms is 24, what is the sum of first 10 terms?
In an A.P., If the 12th Term is −13 and the Sum of Its First …
WebApr 5, 2024 · By simplifying it, we get the equation of the form: S 4 = 4 a + 6 d . First condition given in the question is 12th term is -13. Substituting this in equation (1), we get it as: a + 11 d = − 13 ……………… (3) By substituting sum of 4th term as 24, we get it as: 4 a + 6 d = 24 ………………… (4) By substituting 11d on both sides of equation (3), we get: WebJan 11, 2024 · 12th term of an AP is (-13) The sum of the four terms is 24. To find: The sum of the first ten terms. 12th term = a₁₂ = -13. → a + (12 -1)d = -13. → a + 11d = -13 . → a = -13 - 11d. Now, Sum of the four terms = 24. Sₙ = Putting the value of 'a' we get. So, The value of d = 28. Now, → a + 11d = -13 . Putting the value of 'd' we get ... how many cars does carter sharer have
In an AP if the 12th term is -13 and the sum of its four …
WebThe 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 sum of its first twenty terms. WebMar 18, 2024 · selected Mar 24, 2024 by ShasiRaj Best answer Let’s take the first term as a and the common difference to be d Given that, a5 = 30 and a12 = 65 And, we know that an = a + (n – 1)d So, a5 = a + (5 – 1)d 30 = a + 4d a = 30 – 4d …. (i) Similarly, a12 = a + (12 – 1) d 65 = a + 11d a = 65 – 11d …. (ii) Subtracting (i) from (ii), we have 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 their common differences is 1:2. If the 7th term of first AP. and 21th term of second A.P. is 23 and 125 respectively. Find two A.P.s. Medium View solution > how many cars does carmax sell a year