We aren't told how many numbers there are. The simplest case is when there are only 3 numbers. 70, 70, 160 Then: mean = (70+70+160)/3 = 300/3 = 100 mode = 70 (because there are more 70's than anything else. median = 70 (the middle number because there are an odd number of numbers) But there could be many many other cases. Edwin