6. Probability
9. Percentage
10. Profit and Loss
14. Mensuration
17. Time and Work
18. Factorization
20.2. Tests of Divisibility
20.2.1. Test Divisibility by 2
20.2.2. Test Divisibility by 3
20.2.3. Test Divisibility by 4
20.2.4. Test Divisibility by 5
20.2.5. Test Divisibility by 6
20.2.6. Test Divisibility by 7
20.2.7. Test Divisibility by 8
20.2.8. Test Divisibility by 9
20.2.9. Test Divisibility by 10
20.2.10. Test Divisibility by 11