A number is divisible by $8$ as well as $12$. By which other numbers will that number be always divisible?

Search and write the rules for divisibility by $15, 18, 45$ and $66$ with at least $2$ examples of each.

Find the prime factorization of $72$ and write in exponential form.

Find the co prime numbers between $20$ and $50$.

Find the greatest $5$-digit number which is divisible by $11$.

Using divisibility tests, determine if the given number is divisible by $2, 3, 4, 5, 6, 7, 8, 9, 10$ or $11$.

Using divisibility tests, determine if the given number is divisible by $2, 3, 4, 5, 6, 7, 8, 9, 10$ or $11$.

Using divisibility tests, determine if the given number is divisible by $2, 3, 4, 5, 6, 7, 8, 9, 10$ or $11$.

Using divisibility tests, determine if the given number is divisible by $2, 3, 4, 5, 6, 7, 8, 9, 10$ or $11$.