Question

find the 12th term from end of ap.1,4,7,10,.....88.

Answer 1

here.
a=1
d=4-1=3
now,
12th term = a+(n-1)d
=1+(12-1)3
=1+11×3
=34

Answer 2

12 term=a+11d
A=1
d=2term_1term
d=4_1
d=3
12 term=1+11*3
12th term=33