If u want to crack EPFO SSA Entrance Exam then u should study the following:
1. Test of Reasoning
2. Test of English Language
3. Test of Numerical Ability
4. Test of Office Aptitude
You can purchase Kiran's Publication's Book for preparation.
SELECTION PROCEDURE:
For Social Security Assistant:
The Recruitment process will have two stages:
i) Written examination (multiple choice objective type English language, test
of reasoning, numerical ability, office work aptitude).
ii) Skill test to assess speed and accuracy for Data Entry Work. Minimum
requirement is 5000 key depressions per hour.