Question

In an A.P. the third term is four times the first term ,and the sixth termis 17;find the series.

Answer 1

Answer:

Step-by-step explanation:

Let a be the first term and D be the common difference

then a3=4a

a+2d =4a

a-4a+2d=0

-3a+2d=0

3a-2d=0..........(i)

and a6=17

a+5d=17...........(ii)

solving (i) &(ii), we get

a=2 & d=3

therefote ap is

2,5,8,11,.......