CBSE Class 10 Maths Sum of n Terms of an A.P.
 find the sum of first 51 term of an AP whose second and third terms are 14 and 18 respectively.

the sum of fourth and eight terms of an A.P is 54 and their product is 665. find the sum of the first thirty terms of an A.P
 If the sum of first m terms of an A.P. is n and the sum of first n terms is m, then show that the sum of its first (m + n) terms is  (m + n).
 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