Verbal Reasoning - Mental Ability Questions

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?

In a certain code language, 'x' represents '+', '÷' represents 'x', '-' represents '÷' and '+' represents '-'. Find out the answer to the following question.
 
15 x 4 ÷ 35 - 70 + 16 = ?

In the following question, select the odd number pair from the given alternatives.

In a certain code language, " EXCITED" is written as "DETICXE". How is "KINLEY" written in that code language?

Rajaram's son's sister's mother is Ramani. How is Ramani related to Rajaram?

If 5 x 4 x 0 = 405
3 x 2 x 8 = 283
then 1 x 7 x 6 = ?

In a certain code language "CANADA" is written as "BZMBEB". How is "SYDNEY" written in that code language?

Pranav went 10 Km to the North. Then he turned West and covered 10 Km. Then he turned south and covered 5 Km. Finally, he turned to the East and covered 10 Km. In which direction he is from the starting point?