Divisibility Rules for 2,3 and 5

The video tutorial explains the concept of divisibility and provides quick methods to determine if a whole number is divisible by 2, 3, or 5. For divisibility by 2, check if the last digit is even. For divisibility by 3, sum the digits and check if the sum is divisible by 3. For divisibility by 5, the last digit should be 0 or 5. Examples are provided for each rule to illustrate the concepts.

Provide an example of a number that is divisible by two and explain why.

Explain why the number 91 is not divisible by three.