CBSE Class 10 - Sum of n Terms of an A.P. Videos
- if in an A.P. the sum of m terms equal to n and the sum of n terms is equal to m, then prove that the sum of (m+n) terms is -(m+n)
- find the sum of 8 multiple of 1.5
- find the sum of first 51 term of an AP whose second and third terms are 14 and 18 respectively.
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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 Sn-2Sn-1 + Sn-2 (n > 2) is equal to A) 2d B) -d C) d D) None of these Explain solution please
