MOST IMPORTANT QUESTIONS FOR HALF YEARLY EXAMS|QUESTIONS ON SUM OF FIRST N TERMS OF AN AP PART 2

Sum Of n Terms Of An A.P.|Questions

Questions|Sum Of First N Terms Of An AP|Sum Of First N Natural Numbers|NCERT Example

Questions|Sum Of First N Terms Of An AP|Sum Of First N Natural Numbers|NCERT Example

Questions|Sum Of First N Terms Of An AP|Sum Of First N Natural Numbers|NCERT Example

Questions on Sum of n terms in A.P.

The sum of first n terms of an AP is (5n - n^(2)). The nth term of the AP is

Introduction|nth term of an AP|Questions|Sum of First n terms of an AP|Questions

Introduction|nth term of an AP|Questions|Sum of First n terms of an AP|Questions

(i) The sum of the first n terms of an AP is ((5n^(2))/(2) + (3n)/(2)) . Find the nth term and the 20th term of this AP. (ii) The sum of the first n terms of an AP is ((3n^(2))/(2) + (5n)/(2)). Find its nth term and the 25th term.

If the sum of the first four terms of an AP is 40 and the sum of the first fourteen terms of an AP is 280. Find the sum of first n terms of the A.P.