The lucent samaanyagyan
is one of the most usefull book for any one to beat any competetive exam.I never seen any exam GS question which have not come in this book, I want to say that if anyone has time and want to increase his knowledge skill and to memorize for any exam use use to ask GS, then lucent will be your best choice.
but I gotone problem
I found a duplicate lucent book in the market.and I noticed it when I saw the instructions,
in the book begining page it is given that in front of book their is a sticker type
which ensure that book is original.
but I dont found any sticker in my book.
so I think it is duplicate or may be by mistake.
but even I like it very much
it is best best book accordingly to me