A B C Z D E F A Z B Solution10 The series of Alphabets fro
     A, B, C, Z, ___?___  D, E, F, ___?___  A, Z, B, ___?___ 
  
  Solution
10) The series of Alphabets from A-Z : A,B,C...Z, A
11) The alphabet coming after F in order isD,E,F, G
12) Here the alphabets are alternating with A in the start then the last alphabet and so on, therefore A,Z,B, Y.

