82.
I is the only vowel,
J is the only one that follows a vowel
J is the only one that doesn't start the name of an element in teh periodic table
J is the only one witha tail when written in lower case
K is the only one that doesn't appear anywhere in the names of the months
83-
1 is the only cube number in that list
or
4 is the only one that can't be written without taking your pen off the paper or going over part of it more than once
or
5 is the only one in teh 5 times table
86 type as in all the other words the Y sound like an i