150 200 250 n which of the dollowing could be the median of the 4 integers listed above? 1: 175 2: 215 3:235 A 1 only B 2 only C 1 and 2 only D 2 and 3 only E 1,2 and 3 我认为求中间数即是中间两数的平均数, 若为" n 150 200 250"中间数为175, 若是"150 200 250 n" 则为225, 其余情况因为n未知则不能求,所以我选A,但答案是C,请NN指教 |