Hello Aspirant ,

Go through the steps for solve this  AOK, QGB, NOE,_______

1. Compare( AOK - NOE) and ( QGB - ??? ) them alternatively each other .
2. From A to N there is difference between is 11 letters so , Q to C also difference 11 letters So, ''C'' (first letter) .
3. Middle letter O-G-O - G So, ''G'' (Middle letter) .
4. From K to E 5 letters difference between them So, alternatively Q to V  also difference 5 letters So, '' V'' (Last letter) .
5. Finally CGV is sequence .

I think you understand very well .

All the best !!!!!