3. Integers
4. Fractions
6. Decimals
9. Percentage
10. Profit and Loss
11. Simple Interest
12. Exponents
15. Mensuration
16. Geometry
17.1. Linear Symmetry
17.1.1. Linear Symmetry Around Us
17.1.3. Linear Symmetry in Alphabets
17.2. Rotational Symmetry
19. Probability
20. Data Handling
Germany