When to start class 10th after 9th

Class 12th Start Date

If the 9th term of an AP is zero, then prove that its 29th term is twice its 19th term.

In a row of boys ,Rajan is 10th from the right and Suraj is 10th from the left. When Rajan and Suraj interchange their positions ,Suraj will be 27th from the left. Which of the following will be Rajan's position from the right ?

If coefficient of 9th, 10th and 11th terms of (1+x)^(n) are in A.P., then the value of n can be

Raman is a student of 10th class. In his class, his position is 16th from the top and 49th from the bottom. What is the total number of students in the class ?

The sum of the first and the third term of G.P. is 15 and that of the 5th and the 7th terms is 240. Find the 9th term :