Verbal Reasoning - Mental Ability Questions

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

18 ÷ 12 - 5 + 30 x 6 = ?

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.
2, 7, 16, ? , 46, 67

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

13, 24, 46, 79, ?

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

BC, JK, RS, ?

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

DW, FY, HA, JC, ?

Which set of letters when sequentially placed at the gaps in the given letter series shall complete it?

CD_E_DD_CD_E

In the morning X and Y are walking towards each other in a park. When they meet, Y's shadow falls upon X. In which direction was X facing?

In the following question, select the odd letter/letters from the given alternatives.