Question

find the 11th term from the last term of Ap 27,23,19,...._65

Answer 1

a=27. d=23-27=-4 or 19-23=-4 n=11
a11 =a+(n-1)d
a11=27+(11-1)(-4)
a11=27+10(-4)
a11=27-40
a11 =13

Answer 2

a= -65 d = 4
a 11 = a+(n-1)d
= -65 + (11-1)×4
= -65 + 40
= -25