Verbal Reasoning - Mental Ability Questions

If 'x' means addition, '­' means division, '÷' means subtraction and '+' means multiplication, then which of the equations is correct?

A series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series.

DCB, HGF, ? , PON

In the following question, select the related word from the given alternatives.
Hockey : Stick : : Boxing : ?

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 ?

If CHANTED is coded as ZEXKQBA, then how will MAY be coded as?

If 6 * 9 – 4 = 58 and 3 * 9 – 7 = 34, then in the expression A * 4 – 9 = 91, what is the value of 'A'?

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