Question

if the fourth term of an ap is 0, then a25/a11=​

Answer 1

the detailed explanation is-

as given, a4=0

i.e. a+(4-1)d =0. (a+(n-1)d = nth term of an AP)

a+3d=0

a=-3d.

similarly, a 25= a+24d. and a 11=a+10d

replacing a with -3d

we get, a25= 24d-3d = 21d

and, a11=10d-3d =7d

then, a25/a 11 = 21d/7d =3/1

hope it helps