CBSE Class 10 Maths Arithmetic Progression
 how many terms of an AP 1,4,7...must be taken to give a sum of 51?
 Arithmetic progression all formulas
 The sum of the first 7 terms of an A.P is 182 if its 4th ans 17th terms are in ratio 1:5 find the Ap
 0.6,1.7,2.8........to100term
 sn denotes the sum of first n terms of an AP, whose common difference is d, then Sn2Sn1 + Sn2 (n > 2) is equal to A) 2d B) d C) d D) None of these Explain solution please
 Sir/Madam Plss solve it Sum of all integers between 100 and 500 which are divisible by 17

Plz solve this question
 Sum of first m terms of an A.P. is 0. If a be the first term of the A.P., then the sum of next n terms is : (A) 1 ( ) − − + m a m n m (B) 1 ( ) − − + m a m n n (C) 1 ( ) − − + n a m n n (D) 1 ( ) − − + n a m n m
 Question 1) Find the sum of first 40 positive integers divisible by 6. Question 2) Find the sum of n terms of the series (41/n)+42/n)+(43/n)+........ Question 3) If the sum of the first n terms of an AP is 1/2(3n²+7n), then find its nth term .Hence write the 20 th term .
 A3=15,S10=125,find d and a10