Question

a equals to 8 , an equals to 62, sn equals to210, Find n and d

Answer 1

8 * n = 62 ⇒ 62 / 8 = n

n = 7.75

s * 7.75 = 210 ⇒ 210 / 7.75

s = 27.0967742

please tell me i'm wrong