RNJ::EGI
PVF::CKH
DLT::___?
Solution:
What if we transform the alphabet to their respective number?
RNJ will become 18, 14 and 10 respectively
Now EGI is 5, 7 and 9 respectively
If we take the half of RNJ and reverse the entire order we will get 5, 7 and 9.
Thus we have to apply the same logic with DLT which is 4, 12 and 20 respectively.
Halving it results in 2, 6 and 10 and on reversing it becomes 10, 6 and 2 which can be represented with JFB.
Thus the missing item is JFB.