First term of an arithmatic sequence is 8 and common difference is 5. Find its 20th termsA98B103C111D87Answer: B. 103Read Explanation:a=8 d=5 Xn = a + (n-1)d X20 = 8 + (20-1) x 5 = 8 + 19 x 5 = 8 + 95 = 103Open explanation in App