So the last question was to decode the LANDMINE if it is coded as PYRBOGRC. So doing some google search, I found the source. Now apparently the code there is PYRBQGRC, not the one given in the exam.

Apparently I couldn't post the link here but if you google: "In a certain code language LANDMINE is written", with the quotation marks included, it is the first link. leads to a book.

So basically it was impossible to solve this question, as these codes follow a specific pattern which one has to decode. The method for this question is given a few pages down the link if you look at it. There was no way to solve this question! HOW IS THIS FAIR! IT WAS FOR 5 FREAKIN marks!!!!! Not to mention the spelling mistakes in the mcqs. Seriously. Very disappointed.