Preparation for Group D in Railway exam

Tell me how can I prepare for Group D in Railway exam, please provide syllabus here???

[Arun Vats]

RRB Group D written examination will be of one and half hour duration with 100 questions only.

The question paper will be printed in Hindi, English, Urdu and Maithili

There will be 1 Marks for each correct answer.
There will be negative marking for marking wrong answers.
1/3 mark will be deducted for each wrong answer.

Syllabus:
Mathematics: HCF, LCM, Percentage, Problem based on Train, Boat & Stream, Time and Distance, Profit and Loss, Average & Number System.

General Intelligence (Reasoning): Data Interpretation, Series problems, Age problems, Data Insufficiency & Arrangement problems.

General Knowledge: Important Events, Important Days, Current Affairs, Politics, Sports, Cinema, Books and Authors.