WebWhat is the sum of the first 10 terms of the A P 1, 3, 5, 7? First term = 1 Last term =19 To find sum of n terms when 1st and last term are known is n/2 (1st term + last term) n=no of terms Therefore Sum of the first 10 terms, n=10 1st term = 1 Last term= 19 So 10/2 (1+19) 10/2×20 5×20 100 Sum of the first 10 terms of the given AP is 100 Web19 sep. 2024 · Example 2: Find the 20th term for the given AP: 3, 5, 7, 9, … Solution: Given, 3, 5, 7, 9, 11…… Here, a = 3, d = 5 – 3 = 2, n = 20 a n = a + (n − 1)d a 20 = 3 + (20− 1)2 a 20 = 3 + 38 a 20 = 41 here 20th term is a 20 = 41 Example 3: Find the sum of the first 20 multiples of 5. Solution: The first 20 multiples of 5 are 5, 10, 15, … 100.
How many terms of the A.P. 3, 5, 7, 9, ... must be added to get the sum
WebIn the arithmetic sequence 3, 6, 9, … which term is 120? (With solution) Here, First term (a)=3 Common difference (d)=6–3=3 We know for AS, an=a+ (n-1)d 120=3+ (n-1)3 3n=120 n=120/3 n=40 Hence,40th term is 120 in given AS. 7 Girija Warrier Studied at Sufficiently Educated Author has 4.7K answers and 10.3M answer views 4 y Related Web2 dagen geleden · After weeks of intense talks, the three parties clinched a deal over the weekend to form a liberal-oriented coalition government to be led by prime minister-designate Kallas. It will be Kallas’ third term as prime minister of Estonia, which is a member of both the European Union and NATO. dwr cymru support with bills
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