guide me !! is it possible ??

Yea its fine

you can both also no prob

that means first 5th question and then 2nd question ans so onnnn.

but write all sub questions at once only.

and my suggestion is write FM or costing at a time dnt combined the both because our mind will not work fast if u combine d both

Yes you can answer any question randumly but you have to answer all sub-questions at one place.

Preferable dont mix Costing and FM paper, if possible write both the papers seperately.

All the best.

yes u can do it that