Verbal Reasoning - Mental Ability Questions

What will be the next set of alphabets in the series? AZ, BY, CX, ___

If 45 % 11 = 7, 59 % 34 = 7 then what is the value of 55 % 4 = ?

If 4!4 = 4, 14!2 = 8 and 10!18 = 14, then find the value of 2!6 = ?

If '­' means 'x' , 'x' means '+' , '+' means '÷' and '÷' means '­' , then what will be the value of 40 x 12 + 3 ­ 6 ÷ 60 = ?

In the following question, by using which mathematical operators will the expression become correct?
27 ? 9 ? 18 ? 24 ? 12

Introducing a man, a woman said that, "He is the son of my mother's brother's father's son." Then how  is the woman related to the man?

If 5@1=60; 12@8=200; 16@2=180; then what is the value of 16@10=?

If code P is denoted by 7, X by 9, M by 5, Z by 8, L by 2, T by 1, then ZLTPXM will be