The marks obtained by 8 students in a mathematics test are: 15, 20, 25, 25, 30, 35, 40, 50. Find mean.A33B32C33.5D30Answer: D. 30 Read Explanation: Mean = Sum/ number = (15 + 20 + 25 + 25 + 30 + 35 + 40 + 50)/8 = 240/8 = 30Read more in App