WebSep 29, 2024 · If the sum of the first m terms of an AP is n and the sum of its n terms is m, then the sum of its (m + n) terms will be (a) m + n (b) - (m + n) (c) m – n (d) 0 Answer Question 12. If nth term of an AP is given by f n = 3n + 4, find the common difference of the AP (a) 3 (b) 2 (c) 4 (d) 7 Answer Question 13. The sum of first ten natural number is WebIf the sum of n terms of an A.P is2n2 + 5n, then the nth term will be: Login. Study Materials. NCERT Solutions. NCERT Solutions For Class 12. ... If the sum of n terms of an A.P. is 2n2 + 5n, then its nth term is (a) 4n − 3 (b) 3n − 4 (c) 4n + 3 (d) 3n + 4. Q. The sum of the first n terms of an AP is given by S n = (2n2 + 5n). Find the nth ...
Very Short answer questions 1. In an A.P. the nth term an =3n−.
WebFeb 26, 2024 · now for the sum of 2nd and 3rd term: Sn=3n^2 + 4n S3=3 (3)^2 + 4 (3) S3=3 (9) + 12 S3=27 + 12 S3=39 so 3rd term= 39 - 20 = 19 so we get the A.P as follows: 7, 13, 19.... now, we have to find the nth term for that we will first put n-1 in place of n Sn=3n^2 + 4n Sn-1 = 3 (n-1)^2 + 4 (n-1) Sn-1= 3 (n^2 + 1 - 2n) +4n -4 Sn-1= 3n^2 + 3 - 6n + 4n - 4 WebIf sum of n terms of an AP is 2 n + 3 n 2, then rth term is A 2 r + 3 r 2 B 3 r 2 - 4 r + 1 C 6 r - 1 D 4 r + 1 Solution The correct option is C 6 r - 1 Explanation for the correct option: Step 1: … farming game on laptop
If the n^th term of an A.P. is an = 3 + 2n , then the common ... - Toppr
WebThe formula to find the nth term of an AP, a n = a+ (n-1)d Now, substitute the values in the formula, we get a 10 = 2 + (10-1)5 a 10 = 2 + (9)5 a 10 = 2+45 a 10 = 47. Hence, the 10th … WebIf the Sum of N Terms of an Ap is 2n2 + 3n, Then Write Its Nth Term. - Mathematics Shaalaa.com. CBSE Commerce (English Medium) Class 11. Textbook Solutions 11871. … WebQuestion The sum of n term of an A.P. is 3n 2+5n. Find the A.P. Hence, find its 16 th term. Medium Solution Verified by Toppr S n=3n 2+5n Taking n=1, we get S 1=3(1) 2+5(1) ⇒S … free printable sunflower pattern