Is $1331$ a multiple of $11$?

Find whether the first number is a factor of the second number or not.

$\mathrm{15,75}$

Find whether the first number is a factor of the second number or not.

$13,40$

Find whether the first number is a factor of the second number or not.

$14,60$

Find whether the first number is a factor of the second number or not.

$7,42$

Find whether the first number is a factor of the second number or not.

$6,48$

Express each as the sum of three odd prime numbers.

$31$

Express each as the sum of three odd prime numbers.

$35$