Question

Find aritetic progression whose tjird term is 16and sevententh tetm exceeds the 5th term by 12

Answer 1

Eq. 1: a +2d = 16

Eq.2: a+4d +12= a +16d

a -a + 12=16d-4d

12=12d

1=d ......... Eq. 3

Substituting Eq. 3 in Eq. 1,

a+2(1)=16

a=16-2

a=14

AP:14,15,16........n