Solution - Sum of First n Terms of an AP



      Forgot password?

View all notifications
Books Shortlist
Your shortlist is empty


Divide 32 into four parts which are in A.P. such that the product of extremes is to the product of means is 7 : 15.


You need to to view the solution
Is there an error in this question or solution?

Similar questions VIEW ALL

Find the sum of all natural numbers between 250 and 1000 which are exactly divisible by 3

view solution

 Show that a1, a… , an , … form an AP where an is defined as below

an = 3 + 4n

Also find the sum of the first 15 terms in each case.

view solution

In a potato race, a bucket is placed at the starting point, which is 5 m from the first potato and other potatoes are placed 3 m apart in a straight line. There are ten potatoes in the line.

A competitor starts from the bucket, picks up the nearest potato, runs back with it, drops it in the bucket, runs back to pick up the next potato, runs to the bucket to drop it in, and she continues in the same way until all the potatoes are in the bucket. What is the total distance the competitor has to run?

[Hint: to pick up the first potato and the second potato, the total distance (in metres) run by a competitor is 2 × 5 + 2 ×(5 + 3)]

view solution

How many terms of the A.P. 27, 24, 21, .... should be taken so that their sum is zero?

view solution

Find the sum of all numbers from 50 to 350 which are divisible by 6. Hence find the 15th term of that A.P.

view solution

Content BooksVIEW ALL [1]

Reference Material

Solution for concept: Sum of First n Terms of an AP. For the course 8th-10th CBSE