Coding and Decoding Questions

If A means +, B means ×, C means ÷, D means −, then the value of given equation will be?

If BLACKSMITH is coded as CNBELUNKUJ, then CHILDREN will be coded as ?

If PONDERS is coded as ONCDQR, then how will MAT be coded as?

In a certain code, if DOG is written as 4157, then what will MAT be written as ?

In a certain code language "TITANIC" is written as "7371835" and "SEMATIC" is written as "6241735". How will "MAINTAIN" be written in that code language?

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

If A = 1, E = 5, then HEAR = ?

Which of the following terms follows the trend of the given list? XYXYXYxy, XYXYXyxY, XYXYxyXY, XYXyxYXY, XYxyXYXY, _______________.