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If you want to clear UPSC Civil Services Exam in 2018, its obvious that you are preparing right now. How...
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Plz tell book list you referred for maths optional
refer to prakash rajpurohit sir blog.
sir i m also preprng maths..plz suggest me the study material which u had prepared. i mean which institute’s notes you studied alongwith your books.
i followed noted from ims institute.