3.1.1. Finding Factors of a Number
3.1.5. Types of Numbers
3.1.5.1. Odd and Even Numbers
3.1.5.2. Prime and Composite Numbers
3.1.5.2.1. Composite Numbers
3.1.5.2.2. Prime Numbers
3.1.5.2.3. Properties of Composite and Prime Numbers
3.1.5.3. Twin Primes
3.1.5.4. Prime Triplet
3.1.6. Co-Primes
3.1.7. Perfect Numbers
3.4. HCF and LCM
6. Integers
7. Fractions
8. Decimals
10. Mensuration
11. Algebra
13. Symmetry