property 2 Every number is a factor of itself

Every number is a multiple of itself.

Property 7 Every number is multiple of itself.

Property 3 If number is a factor of each of the two given numbers then it is a factor of their sum.

Property 4 If a number is a factor of each of the two given numbers then it is factor of their difference.

Tell whether each of the following statements is true or false: Every natural number is a multiple of itself.

property 4 Every factor of a number is less than or equal to the number.

Property 3 Every factors of a number is an exact is an exact divisor of that number.

Theorem 1 (Every set is a subset of itself.Theorem 2( The empty set is a subset of every set)

Property 1 is a factor of every number