How many terms of ap 24 21 18 is 78

Web10 jul. 2024 · How many terms of the AP : 24, 21,18,... must be taken so that their sum is 78? class-10 arithmetic-progressions Answer 0 votes Best answer a=24 and d=21-24=-3 S n = n 2 (2a + (n − 1)d) S n = n 2 ( 2 a + ( n - 1) d) 78 = n 2 (2(24) + (n − 1)( − 3)) 78 = n 2 ( 2 ( 24) + ( n - 1) ( - 3)) 156=n (48-3n+3) n2 − 51n + 156 = 0 n 2 - 51 n + 156 = 0 WebHow many terms of the A.P: 24, 21, 18, ……… must be taken so that their sum is 78? Advertisement Remove all ads Solution Let the number of terms taken be n. THe given A.P is 24, 21, 18, ..... Here a = 24 and d = 21 - 24= -3 S = n 2 [ 2 a + ( n - 1) d] ⇒ 78 = n 2 [ 2 × 24 + ( n - 1) × ( - 3)] ⇒ 78 = n 2 [ 48 - 3 n + 3] => 156 = n [51 - 3n]

How Many Terms of the A.P. : 24, 21, 18, - Shaalaa.com

Web3 apr. 2024 · If the 10th term of an AP is 21 and 17th term is 8 more than the 13th term, then find the AP. Q4. How many terms of the AP 4, 11, 18, ________ will make the sum … Web8 jan. 2024 · here,a = 24d = -3an = -78an = a + (n - 1)d -78 = 24 + (n - 1)-3 -78 = 24 -3n + 3 3n = 24 + 3 + 78 3n = 105 n = 105/3 n = 35so, -78 is 35th term of AP iphone lifeproof 6 https://odxradiologia.com

How many terms of the AP : 24, 21, 18 .... must be taken so that …

WebHow many terms of the A.P. 24, 21, 18, … must be taken so that the sum is 78? Explain the double answer. Advertisement Remove all ads Solution A.P. is 24, 21, 18,... Sum = … WebWhite House press corps. The White House press corps is the group of journalists, correspondents, and members of the media usually assigned to the White House in … Web12 mrt. 2024 · How many terms of the AP : 24, 21, 18, . . . must be taken so that their sum is 78? Answers / Hints 1. a) 2. c) 3. d = 2ab, 590, 4. 2,6,10,14 / 14,10,6,2 OR 40 1. - 4 2. … iphone lifeproof 5c

How many terms of the A.P; 24,21,18,... must be taken such that …

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How many terms of ap 24 21 18 is 78

[Solved] The 8th term of an AP is 18 more than the second

Web4 jan. 2024 · Given : AP = 24,21.. Sn = 78 . To find : n = ? AP = 24, 21 , 18 .. So, First term of AP = (a) = 24, common difference (d) = (21 - 24) = -3. Let n no. of terms to be taken, … Web4 mrt. 2024 · How many Terms of the AP 24 21 18 must be taken so that their Sum is 78 Class 10 Maths Chapter 5 Example 13Example 13 : How many terms of the AP : 24, 21, ...

How many terms of ap 24 21 18 is 78

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Web19 apr. 2024 · So, the sum of the first 20 terms of the AP is 250. Example:How many terms of the AP: 24, 21, 18 … must be taken so that their sum is 78? Solution:Here, a = 24, d = 21 – 24 = –3, Sn= 78. We need to find n. We know that Sn= n/2[2a + (n – 1) d] Therefore, 78 = n/2[2 × 24 + (n – 1) × (-3)] 78 × 2 = n [48 – 3n + 3] 156 = 51n – 3n2 3n2– … WebHow many terms of the a.p: 24,21,18,.must be taken so that the sum is 78? View answer. How many terms of the AP: 9,17,25 .must be taken to give a sum of 636? ... How many terms of an ap 45,39,33,.must be taken so thier sum is 180? for Class 10 2024 is part of Class 10 preparation.

WebHow many terms of the A.P. 24, 21, 18, … must be taken so that the sum is 78? Explain the double answer. Web25 nov. 2024 · How many terms of the AP: 24,21,18 must be taken so that thier sum is 78? See answer Advertisement Brainly User First term, a = 24 common difference, d = 21-24 = -3 let the number of terms to get sum 78 is n.

WebQuestion From - NCERT Maths Class 10 Chapter 5 SOLVED EXAMPLES Question – 13 ARITHMETIC PROGRESSIONS CBSE, RBSE, UP, MP, BIHAR BOARDQUESTION … WebAfter several unsuccessful predictions in 1994 and 1995, Camping predicted that the rapture and devastating earthquakes would occur on 21 May 2011, with God taking approximately 3% of the world's population into Heaven, …

Web3 apr. 2024 · First term (t 1) = a = 3, Common difference (d) = 8 – 3 = 5 and last term (t n) = 78 The general term of A.P is t n = a + (n - 1) d 78 = 3 + (n – 1)5 ⇒ 78 = 3 + 5n – 5 ⇒ 78 = - 2 + 5n ⇒ 78 + 2 = 5n ⇒ 80 = 5n ⇒ n = 16 ∴ 78 is 16th term of A.P: 3, 8,13, 18,... Download Solution PDF Share on Whatsapp Latest SSC CGL Updates Last updated on Apr 3, 2024

Web16 mrt. 2024 · Best answer Given A.P. 24, 21, 18,..... First term = 24 = a and common difference = – 3 = d ... (i) Let no. of terms is n. Sum of n terms = n 2 [2a + (n − 1)d] n 2 [ … iphone lifeproof case 6WebThe 8th term of an AP is 18 more than the second term of the AP. The third term is 7. Formula: n-th term of an AP = a + (n - 1)d, where a is the first term, n is the total number … iphone lifeproof nuudWeb4 jan. 2024 · Given : AP = 24,21.. Sn = 78 . To find : n = ? AP = 24, 21 , 18 .. So, First term of AP = (a) = 24, common difference (d) = (21 - 24) = -3. Let n no. of terms to be taken, So that sum = 78. So, sum of n terms of the AP, Sn = n/2 × [2a + (n-1)d] Substituting the given value in above formula we get, = n/2 × (2 x 24 + (n-1) × (-3) ∴ n/2 × ... iphone lifeproof case 5sorange chips pokerWeb16 mrt. 2024 · An important question from ML Aggarwal(Avichal Publication) Find the number of terms of the A.P; 24,21,18,... must be taken such that their sum is 78. Sir … orange chinosWebAn AP consists of 50 terms of which 3rd term is 12 and the last term is 106. Find the 29th term. 6. Find the 10th term of the AP: 2, 7, 12, … 7. Find the 6th term from the end of the AP: 17, 14, 11, …, –40. 8. Which term of the AP: 21, 18, 15, … is zero? 9. Write the next term of the AP: 8 1 , , 8 32 , ……….. 10. iphone lifeproof fre caseWeb10 jul. 2024 · Click here 👆 to get an answer to your question ️ Howmanydermsmustofthe AP: 24, 21, 18....must be taken so that their sum is 78? shafiya15 shafiya15 10.07.2024 Math Secondary School answered How many derms must of the AP: 24, 21, 18.... must be taken so that their sum is 78? 1 iphone lifted pads