http://prntscr.com/kzh1ct
The trird term is 13 and the fourth term is 18
So....the common difference = 5
To find the first term, we have
13 - 2d = 13 - 2(5) = 13 - 10 = 3
So....the 50th term is
3 + 5 (50 - 1) =
3 + 5(49) =
248 ⇒ "A"
