Verbal Reasoning - Mental Ability Questions

In a certain code language, '÷' represents '+', '-' represents 'x', '+' represents '÷' and 'x' represents '-'. Find out the answer to the following question.

8 - 14 + 7 x 10 ÷ 9 = ?

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

9, 17, 44, 108, 233, ?

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

?, HI, OP, WX

If (3)2 @ 1 * 7 = 98 and (4)2 @ 2 * 16 = 178, then (5)2 @ 3 * 9 = ?

If WASP STINGS HARD is coded as @%Z, HARD TO DEAL is coded as Z65 and HEAL LONG TIME is coded as 896, what is the code for HARD?

If ETHANOL is coded as HWKDQRO, then how will MIX be coded as?

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

If 24x2=84, and 32x3=69, then 13x3=?