Question

find the a.p whose third team is 16 and 7 is less than 12 in the 5th position

Answer 1

as given, a+2d=16

and a+6d=a+4d+12

implies that, 2d=12

d=6

a+2*6=16

a+12=16

a=4

ap=a,a+d,(a+2d),(a+3d)...

4, 10,16,22,28,34,40,..