## terms will be (pq + 1) where p #q. 2 9. The sum of 15 terms of A.P. is zero. Its 4th term is 12. Find its 14th term. TA<

Question

Lost your password? Please enter your email address. You will receive a link and will create a new password via email.

## Answers ( )

Answer:Prove that” a/p ” (q − r) + ” b/q ” (r − p)+ ” c/r ” (p − q) = 0″ Here we have small ‘a’ in … Ex 9.2 , 11 – Chapter 9 Class 11

Step-by-step explanation:Given: Sum of p terms of an AP = Sum of q terms of an AP. Sp=Sq. p/2[2a +(p-1)d]=q/ 2 [2a+(q-1)d]. p[2a +pd – d]=q[2a+qd – d ] … + (p+q)d – d ]=0. Hence, the sum of its first (p+q) terms is 0.