Find all the multiples of $11$ up to $200$.

Check if the first number is a factor of the second number:

$9, 45$

Which of the following numbers are divisible by $4$?

$2028$

Check if the first number is a factor of the second number: $15, 60$

Check if the first number is a factor of the second number:

$13, 42$

Check if the first number is a factor of the second number:

Express $15$ as the sum of three odd primes.