1. Let's understand divisibility rules in simple terms. 2. Rule for 2: A number is divisible by 2 if its last digit (ones place) is divisible by 2. This means the last digit can be 0, 2, 4, 6, or 8. 3. Example: 16 ends with 6, and since 6 is divisible by 2, 16 is divisible by 2. 4. Rule for 5: A number is divisible by 5 if its last digit is 0 or 5. 5. Examples: 50 ends with 0, and 15 ends with 5, so both are divisible by 5. 6. Rule for 10: A number is divisible by 10 if its last digit is 0. 7. Example: 30 ends with 0, so it is divisible by 10. These rules help quickly check divisibility without doing full division.