Verbal Reasoning - Mental Ability Questions

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

P is the brother of Q. Q is the brother of R. P is the son of S. Based these three statements, much of the following statements cannot be definitely true?

Sham goes to his friend's house that is straight 10 Km from his house. On his way back, he takes a right turn and walks 2 Km and again takes a right turn and walks for 10 Km before he takes a right turn again. How much distance is Sham still away from his house?

Find the odd word/letters/number pair from the given alternatives.

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

6, 18, 54, ? , 486, 1458

Ram said , "Sita is my paternal great grandfather's only son's only daughter-in-law". How is Sita related to Ram?

In certain code, if 'AMOUNT' is written as 'BNPTMS', how is 'AROUND' written in that code?

In a certain code language, "ENERGETIC" is written as "ETICGENER". How is "CARTRIDGE" written in that code language?