This book help for GRE, IELTS, TOEFL and addition Quantitative Aptitude will definitely help you. It is based on the latest syllabus requirement of all competition exams specially SSC. Quantum Cat with Kiran publishers previous years chapterwise books will be sufficient for maths and for the rest of the topics like Reasoning, English and GK. You can check the strategy at the right sidebar.
Practicing test papers is required for two important reasons:
You will understand the nature of questions SSC like to ask.
It increases your speed.