Respuesta :

Here,

First term (a) = 1

Common difference (d) = 3 -1 = 2

number of term (n) = 8

Last term (Tn) = ?

Now,

Tn = a + (n - 1) d

= 1 + (8 - 1) 2

= 1 + 7*2

= 15

Tn = 15

I hope you understand...

This is a Right answer...

Thanks