Question

find the 25th term of an ap - 5 - 5 /2 ,0, 5/2......​

Answer 1

here, a=-5, d=-5/2-(-5) =-5/2+10/2=5/2
t25=?

t25=a+(n-1) d
=-5+(25-1) 5/2
=5+24×5/2
=5+120/2
=10/2+120/2
=130/2
=75

the 25th term of given ap is 75