If seven times the 7th terms of ap in equal to elven times the 11th term then what will be the 18 th

If seven times the 7th terms of ap in equal to elven times the 11th te

1.	If seven times the 7th terms of ap in equal to elven times the 11th term then what will be the 18 th
Answer» 7(a7) = 11(a11) Find a187(a+6d) = 11(a+10d)7a + 42d = 11a + 110d 7a - 11a = 110d - 42d-4a = 68d a= -68/4a = -17da+17d = 0a18 = 0 0 Zero