A:p(Ne)>p(H2)>p(O2)
B:p(O2)> p(Ne)> p(H2)
C:p(H2)> p(O2)> p(Ne)
D:p(H2)> p(Ne)> p(O2)
you can't answer the question, perhaps we'd better ask someone else.
(2016•菏泽)某校九年级(1)班40名同学中,14岁的有1人,15岁的有21人,16岁的有16人,17岁的有2人,则这个班同学年龄的中位数是____岁.