Question

if the 7th term of an ap is zero prove that its 27th term is five times its 11th term​

Answer 1

T7 = a+6d

T11 = a+10d

T27 = a+26d

a+6d = 0

a = -6d

T27 = -6d+26d = 20d

T11 = -6d+10d = 4d

Answer 2

Answer:

Step-by-step explanation: