Introduction to Critical Thinking
2 Topics | 1 Quiz 1. Critical Thinking
6 Topics | 6 Quizzes Introduction to Problem Solving
2 Topics | 1 Quiz 2. Problem Solving
7 Topics | 7 Quizzes Introduction to General Knowledge
2 Topics | 1 Quiz 3. General Knowledge
9 Topics | 9 Quizzes Introduction to Biology
2 Topics | 1 Quiz 4. Biology
82 Topics | 78 Quizzes Introduction to Chemistry
2 Topics | 1 Quiz 5. Chemistry
30 Topics | 29 Quizzes Introduction to Mathematics
2 Topics | 1 Quiz 6. Maths
35 Topics | 27 Quizzes Introduction to Physics
2 Topics | 1 Quiz 7. Physics
10 Topics | 10 Quizzes 8. Reading and Knowledge Acquired During Studies
10 Topics | 9 Quizzes 
2.01 Age Ratio Problems
The Problem
This question type involves giving you a relationship between two ages at two different points in time. Your task is then to work out the ages of the people/things in question.
It is best to do these questions by drawing a table, so you do not mix up your information.
Quizzes